102542125 has 16 divisors (see below), whose sum is σ = 146255616. Its totient is φ = 70314000.

The previous prime is 102542123. The next prime is 102542129. The reversal of 102542125 is 521245201.

It is not a de Polignac number, because 102542125 - 2¹ = 102542123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102542096 and 102542105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102542123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57721 + ... + 59470.

It is an arithmetic number, because the mean of its divisors is an integer number (9140976).

Almost surely, 2^102542125 is an apocalyptic number.

It is an amenable number.

102542125 is a deficient number, since it is larger than the sum of its proper divisors (43713491).

102542125 is an equidigital number, since it uses as much as digits as its factorization.

102542125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117213 (or 117203 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 102542125 is about 10126.3085574162. The cubic root of 102542125 is about 468.0591838976.

Adding to 102542125 its reverse (521245201), we get a palindrome (623787326).

The spelling of 102542125 in words is "one hundred two million, five hundred forty-two thousand, one hundred twenty-five".