42091954780 has 24 divisors (see below), whose sum is σ = 93592700208. Its totient is φ = 15846382848.

The previous prime is 42091954769. The next prime is 42091954843. The reversal of 42091954780 is 8745919024.

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, 61899594 + ... + 61900273.

It is an arithmetic number, because the mean of its divisors is an integer number (3899695842).

Almost surely, 2^42091954780 is an apocalyptic number.

It is an amenable number.

42091954780 is an abundant number, since it is smaller than the sum of its proper divisors (51500745428).

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

42091954780 is a wasteful number, since it uses less digits than its factorization.

42091954780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123799893 (or 123799891 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 42091954780 in words is "forty-two billion, ninety-one million, nine hundred fifty-four thousand, seven hundred eighty".