42471937 has 2 divisors, whose sum is σ = 42471938. Its totient is φ = 42471936.

The previous prime is 42471931. The next prime is 42471971. The reversal of 42471937 is 73917424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42107121 + 364816 = 6489^2 + 604^2 .

It is a cyclic number.

It is not a de Polignac number, because 42471937 - 2³ = 42471929 is a prime.

It is a pancake number, because a pancake can be divided into 42471937 parts by 9216 straight cuts.

It is a junction number, because it is equal to n+sod(n) for n = 42471896 and 42471905.

It is not a weakly prime, because it can be changed into another prime (42471931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21235968 + 21235969.

It is an arithmetic number, because the mean of its divisors is an integer number (21235969).

Almost surely, 2^42471937 is an apocalyptic number.

It is an amenable number.

42471937 is a deficient number, since it is larger than the sum of its proper divisors (1).

42471937 is an equidigital number, since it uses as much as digits as its factorization.

42471937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 42471937 is about 6517.0497159374. The cubic root of 42471937 is about 348.8997749987.

It can be divided in two parts, 424 and 71937, that added together give a square (72361 = 269²).

The spelling of 42471937 in words is "forty-two million, four hundred seventy-one thousand, nine hundred thirty-seven".