42820977642 has 32 divisors (see below), whose sum is σ = 86090425344. Its totient is φ = 14198982000.

The previous prime is 42820977637. The next prime is 42820977721. The reversal of 42820977642 is 24677902824.

42820977642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42820977642² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2969173 + ... + 2983559.

It is an arithmetic number, because the mean of its divisors is an integer number (2690325792).

Almost surely, 2^42820977642 is an apocalyptic number.

42820977642 is an abundant number, since it is smaller than the sum of its proper divisors (43269447702).

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

42820977642 is a wasteful number, since it uses less digits than its factorization.

42820977642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16954.

The product of its (nonzero) digits is 2709504, while the sum is 51.

The spelling of 42820977642 in words is "forty-two billion, eight hundred twenty million, nine hundred seventy-seven thousand, six hundred forty-two".