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102420141 = 3291177243
BaseRepresentation
bin1100001101011…
…00111010101101
321010201111000120
412012230322231
5202204421031
614055115153
72352361665
oct606547255
9233644016
10102420141
11528a484a
122a372ab9
13182b0245
14d8611a5
158ed1a96
hex61acead

102420141 has 8 divisors (see below), whose sum is σ = 141269280. Its totient is φ = 65925552.

The previous prime is 102420137. The next prime is 102420151. The reversal of 102420141 is 141024201.

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

It is not a de Polignac number, because 102420141 - 22 = 102420137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102420141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102420151) 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, 588535 + ... + 588708.

It is an arithmetic number, because the mean of its divisors is an integer number (17658660).

Almost surely, 2102420141 is an apocalyptic number.

It is an amenable number.

102420141 is a deficient number, since it is larger than the sum of its proper divisors (38849139).

102420141 is a wasteful number, since it uses less digits than its factorization.

102420141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177275.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 102420141 is about 10120.2836422701. The cubic root of 102420141 is about 467.8735093539.

Adding to 102420141 its reverse (141024201), we get a palindrome (243444342).

The spelling of 102420141 in words is "one hundred two million, four hundred twenty thousand, one hundred forty-one".

Divisors: 1 3 29 87 1177243 3531729 34140047 102420141