42972204778 has 8 divisors (see below), whose sum is σ = 64523883168. Its totient is φ = 21464243724.

The previous prime is 42972204773. The next prime is 42972204787. The reversal of 42972204778 is 87740227924.

42972204778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×42972204778² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42972204773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10926876 + ... + 10930807.

It is an arithmetic number, because the mean of its divisors is an integer number (8065485396).

Almost surely, 2^42972204778 is an apocalyptic number.

42972204778 is a deficient number, since it is larger than the sum of its proper divisors (21551678390).

42972204778 is a wasteful number, since it uses less digits than its factorization.

42972204778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21858668.

The product of its (nonzero) digits is 3161088, while the sum is 52.

The spelling of 42972204778 in words is "forty-two billion, nine hundred seventy-two million, two hundred four thousand, seven hundred seventy-eight".