42610531 has 2 divisors, whose sum is σ = 42610532. Its totient is φ = 42610530.

The previous prime is 42610511. The next prime is 42610553. The reversal of 42610531 is 13501624.

42610531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (42610553) can be obtained adding 42610531 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42610531 - 2⁵ = 42610499 is a prime.

It is a super-2 number, since 2×42610531² = 3631314704203922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42610511) 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, 21305265 + 21305266.

It is an arithmetic number, because the mean of its divisors is an integer number (21305266).

Almost surely, 2^42610531 is an apocalyptic number.

42610531 is a deficient number, since it is larger than the sum of its proper divisors (1).

42610531 is an equidigital number, since it uses as much as digits as its factorization.

42610531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 42610531 is about 6527.6742412593. The cubic root of 42610531 is about 349.2788716943.

The spelling of 42610531 in words is "forty-two million, six hundred ten thousand, five hundred thirty-one".