42054778990 has 32 divisors (see below), whose sum is σ = 86624717760. Its totient is φ = 14400109824.

The previous prime is 42054778979. The next prime is 42054778991. The reversal of 42054778990 is 9987745024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42054778991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334495 + ... + 442714.

It is an arithmetic number, because the mean of its divisors is an integer number (2707022430).

Almost surely, 2^42054778990 is an apocalyptic number.

42054778990 is an abundant number, since it is smaller than the sum of its proper divisors (44569938770).

42054778990 is a wasteful number, since it uses less digits than its factorization.

42054778990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777996.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 42054778990 in words is "forty-two billion, fifty-four million, seven hundred seventy-eight thousand, nine hundred ninety".