42972071251 has 8 divisors (see below), whose sum is σ = 43520614400. Its totient is φ = 42423643080.

The previous prime is 42972071237. The next prime is 42972071273. The reversal of 42972071251 is 15217027924.

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

It is a cyclic number.

It is not a de Polignac number, because 42972071251 - 2⁷ = 42972071123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42972071201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 922990 + ... + 968428.

It is an arithmetic number, because the mean of its divisors is an integer number (5440076800).

Almost surely, 2^42972071251 is an apocalyptic number.

42972071251 is a deficient number, since it is larger than the sum of its proper divisors (548543149).

42972071251 is a wasteful number, since it uses less digits than its factorization.

42972071251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57489.

The product of its (nonzero) digits is 70560, while the sum is 40.

The spelling of 42972071251 in words is "forty-two billion, nine hundred seventy-two million, seventy-one thousand, two hundred fifty-one".