42102012542 has 8 divisors (see below), whose sum is σ = 63358729896. Its totient is φ = 20982435912.

The previous prime is 42102012521. The next prime is 42102012551. The reversal of 42102012542 is 24521020124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34284413 + ... + 34285640.

It is an arithmetic number, because the mean of its divisors is an integer number (7919841237).

Almost surely, 2^42102012542 is an apocalyptic number.

42102012542 is a deficient number, since it is larger than the sum of its proper divisors (21256717354).

42102012542 is a wasteful number, since it uses less digits than its factorization.

42102012542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68570362.

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 42102012542 its reverse (24521020124), we get a palindrome (66623032666).

The spelling of 42102012542 in words is "forty-two billion, one hundred two million, twelve thousand, five hundred forty-two".