42237031 has 2 divisors, whose sum is σ = 42237032. Its totient is φ = 42237030.

The previous prime is 42237007. The next prime is 42237037. The reversal of 42237031 is 13073224.

42237031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42237031 - 2⁷ = 42236903 is a prime.

It is a super-2 number, since 2×42237031² = 3567933575389922, which contains 22 as substring.

It is equal to p_2561134 and since 42237031 and 2561134 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 42236993 and 42237011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42237037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21118515 + 21118516.

It is an arithmetic number, because the mean of its divisors is an integer number (21118516).

Almost surely, 2^42237031 is an apocalyptic number.

42237031 is a deficient number, since it is larger than the sum of its proper divisors (1).

42237031 is an equidigital number, since it uses as much as digits as its factorization.

42237031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 42237031 is about 6499.0023080470. The cubic root of 42237031 is about 348.2553477781.

The spelling of 42237031 in words is "forty-two million, two hundred thirty-seven thousand, thirty-one".