102115154342542 has 16 divisors (see below), whose sum is σ = 167099052833712. Its totient is φ = 46415554928320.

The previous prime is 102115154342507. The next prime is 102115154342623. The reversal of 102115154342542 is 245243451511201.

It is a junction number, because it is equal to n+sod(n) for n = 102115154342495 and 102115154342504.

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, 18748273 + ... + 23573884.

It is an arithmetic number, because the mean of its divisors is an integer number (10443690802107).

Almost surely, 2^{102115154342542} is an apocalyptic number.

102115154342542 is a deficient number, since it is larger than the sum of its proper divisors (64983898491170).

102115154342542 is a wasteful number, since it uses less digits than its factorization.

102115154342542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42431843.

The product of its (nonzero) digits is 192000, while the sum is 40.

The spelling of 102115154342542 in words is "one hundred two trillion, one hundred fifteen billion, one hundred fifty-four million, three hundred forty-two thousand, five hundred forty-two".