102542502 has 16 divisors (see below), whose sum is σ = 205187760. Its totient is φ = 34163712.

The previous prime is 102542501. The next prime is 102542519. The reversal of 102542502 is 205245201.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102542501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16318 + ... + 21710.

It is an arithmetic number, because the mean of its divisors is an integer number (12824235).

Almost surely, 2^102542502 is an apocalyptic number.

102542502 is an abundant number, since it is smaller than the sum of its proper divisors (102645258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102542502 is a wasteful number, since it uses less digits than its factorization.

102542502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8567.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 102542502 is about 10126.3271722772. The cubic root of 102542502 is about 468.0597575093.

Adding to 102542502 its reverse (205245201), we get a palindrome (307787703).

The spelling of 102542502 in words is "one hundred two million, five hundred forty-two thousand, five hundred two".