42972937 has 4 divisors (see below), whose sum is σ = 49111936. Its totient is φ = 36833940.

The previous prime is 42972911. The next prime is 42972959. The reversal of 42972937 is 73927924.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42972937 - 2¹⁵ = 42940169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42972893 and 42972902.

It is not an unprimeable number, because it can be changed into a prime (42972907) 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, 3069489 + ... + 3069502.

It is an arithmetic number, because the mean of its divisors is an integer number (12277984).

Almost surely, 2^42972937 is an apocalyptic number.

It is an amenable number.

42972937 is a deficient number, since it is larger than the sum of its proper divisors (6138999).

42972937 is an equidigital number, since it uses as much as digits as its factorization.

42972937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6138998.

The product of its digits is 190512, while the sum is 43.

The square root of 42972937 is about 6555.3746651126. The cubic root of 42972937 is about 350.2662925817.

The spelling of 42972937 in words is "forty-two million, nine hundred seventy-two thousand, nine hundred thirty-seven".