42288031 has 2 divisors, whose sum is σ = 42288032. Its totient is φ = 42288030.

The previous prime is 42288019. The next prime is 42288041. The reversal of 42288031 is 13088224.

42288031 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 42288031 - 2²¹ = 40190879 is a prime.

It is a super-2 number, since 2×42288031² = 3576555131713922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42288041) 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, 21144015 + 21144016.

It is an arithmetic number, because the mean of its divisors is an integer number (21144016).

Almost surely, 2^42288031 is an apocalyptic number.

42288031 is a deficient number, since it is larger than the sum of its proper divisors (1).

42288031 is an equidigital number, since it uses as much as digits as its factorization.

42288031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 42288031 is about 6502.9248035019. The cubic root of 42288031 is about 348.3954608374.

The spelling of 42288031 in words is "forty-two million, two hundred eighty-eight thousand, thirty-one".