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102030401 = 118921171
BaseRepresentation
bin1100001010011…
…01110001000001
321002222200101202
412011031301001
5202104433101
614042510545
72346146504
oct605156101
9232880352
10102030401
1152658a50
122a205455
13181a4a25
14d79d13b
158e5636b
hex614dc41

102030401 has 12 divisors (see below), whose sum is σ = 112666704. Its totient is φ = 91634400.

The previous prime is 102030391. The next prime is 102030407. The reversal of 102030401 is 104030201.

It is a happy number.

It is not a de Polignac number, because 102030401 - 210 = 102029377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (11).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102030407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86546 + ... + 87716.

It is an arithmetic number, because the mean of its divisors is an integer number (9388892).

Almost surely, 2102030401 is an apocalyptic number.

102030401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102030401 is a deficient number, since it is larger than the sum of its proper divisors (10636303).

102030401 is an equidigital number, since it uses as much as digits as its factorization.

102030401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360 (or 1271 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 102030401 is about 10101.0099000050. The cubic root of 102030401 is about 467.2792876578.

Adding to 102030401 its reverse (104030201), we get a palindrome (206060602).

The spelling of 102030401 in words is "one hundred two million, thirty thousand, four hundred one".

Divisors: 1 11 89 979 1171 7921 12881 87131 104219 1146409 9275491 102030401