102454639 has 12 divisors (see below), whose sum is σ = 119380800. Its totient is φ = 87671808.

The previous prime is 102454609. The next prime is 102454657. The reversal of 102454639 is 936454201.

It is a happy number.

It is not a de Polignac number, because 102454639 - 2⁵ = 102454607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102454609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36322 + ... + 39040.

It is an arithmetic number, because the mean of its divisors is an integer number (9948400).

Almost surely, 2^102454639 is an apocalyptic number.

102454639 is a deficient number, since it is larger than the sum of its proper divisors (16926161).

102454639 is an equidigital number, since it uses as much as digits as its factorization.

102454639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3502 (or 3495 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 102454639 is about 10121.9878976415. The cubic root of 102454639 is about 467.9260344669.

It can be divided in two parts, 10245 and 4639, that added together give a square (14884 = 122²).

The spelling of 102454639 in words is "one hundred two million, four hundred fifty-four thousand, six hundred thirty-nine".