42015556242 has 36 divisors (see below), whose sum is σ = 100061846430. Its totient is φ = 12731986080.

The previous prime is 42015556211. The next prime is 42015556277. The reversal of 42015556242 is 24265551024.

42015556242 is a `hidden beast` number, since 4 + 2 + 0 + 1 + 55 + 562 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21342580281 + 20672975961 = 146091^2 + 143781^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42015556197 and 42015556206.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 9643267 + ... + 9647622.

Almost surely, 2^42015556242 is an apocalyptic number.

42015556242 is an abundant number, since it is smaller than the sum of its proper divisors (58046290188).

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

42015556242 is a wasteful number, since it uses less digits than its factorization.

42015556242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19290919 (or 19290905 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 42015556242 in words is "forty-two billion, fifteen million, five hundred fifty-six thousand, two hundred forty-two".