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102668943 = 3132632537
BaseRepresentation
bin1100001111010…
…01101010001111
321011012010022110
412013221222033
5202240401233
614104315103
72354446236
oct607515217
9234163273
10102668943
1152a54773
122a472a93
1318369570
14d8c7b1d
159030663
hex61e9a8f

102668943 has 8 divisors (see below), whose sum is σ = 147422128. Its totient is φ = 63180864.

The previous prime is 102668939. The next prime is 102668947. The reversal of 102668943 is 349866201.

It is an interprime number because it is at equal distance from previous prime (102668939) and next prime (102668947).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102668943 - 22 = 102668939 is a prime.

It is a super-4 number, since 4×1026689434 (a number of 33 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 2632537 = 102668943 / (1 + 0 + 2 + 6 + 6 + 8 + 9 + 4 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102668947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1316230 + ... + 1316307.

It is an arithmetic number, because the mean of its divisors is an integer number (18427766).

Almost surely, 2102668943 is an apocalyptic number.

102668943 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

102668943 is a deficient number, since it is larger than the sum of its proper divisors (44753185).

102668943 is a wasteful number, since it uses less digits than its factorization.

102668943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632553.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 102668943 is about 10132.5684305609. The cubic root of 102668943 is about 468.2520603247.

The spelling of 102668943 in words is "one hundred two million, six hundred sixty-eight thousand, nine hundred forty-three".

Divisors: 1 3 13 39 2632537 7897611 34222981 102668943