102100542 has 16 divisors (see below), whose sum is σ = 213079680. Its totient is φ = 32553752.

The previous prime is 102100529. The next prime is 102100567. The reversal of 102100542 is 245001201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369792 + ... + 370067.

It is an arithmetic number, because the mean of its divisors is an integer number (13317480).

Almost surely, 2^102100542 is an apocalyptic number.

102100542 is an abundant number, since it is smaller than the sum of its proper divisors (110979138).

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

102100542 is a wasteful number, since it uses less digits than its factorization.

102100542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739887.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 102100542 is about 10104.4812830744. The cubic root of 102100542 is about 467.3863404856.

Adding to 102100542 its reverse (245001201), we get a palindrome (347101743).

The spelling of 102100542 in words is "one hundred two million, one hundred thousand, five hundred forty-two".