42400613 has 2 divisors, whose sum is σ = 42400614. Its totient is φ = 42400612.

The previous prime is 42400607. The next prime is 42400619. The reversal of 42400613 is 31600424.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (42400607) and next prime (42400619).

It can be written as a sum of positive squares in only one way, i.e., 42276004 + 124609 = 6502^2 + 353^2 .

It is a cyclic number.

It is not a de Polignac number, because 42400613 - 2⁶ = 42400549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42400619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21200306 + 21200307.

It is an arithmetic number, because the mean of its divisors is an integer number (21200307).

Almost surely, 2^42400613 is an apocalyptic number.

It is an amenable number.

42400613 is a deficient number, since it is larger than the sum of its proper divisors (1).

42400613 is an equidigital number, since it uses as much as digits as its factorization.

42400613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 42400613 is about 6511.5753086331. The cubic root of 42400613 is about 348.7043607067.

The spelling of 42400613 in words is "forty-two million, four hundred thousand, six hundred thirteen".