42436631 has 2 divisors, whose sum is σ = 42436632. Its totient is φ = 42436630.

The previous prime is 42436609. The next prime is 42436637. The reversal of 42436631 is 13663424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42436631 - 2⁶ = 42436567 is a prime.

It is a super-2 number, since 2×42436631² = 3601735301260322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42436594 and 42436603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42436637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21218315 + 21218316.

It is an arithmetic number, because the mean of its divisors is an integer number (21218316).

Almost surely, 2^42436631 is an apocalyptic number.

42436631 is a deficient number, since it is larger than the sum of its proper divisors (1).

42436631 is an equidigital number, since it uses as much as digits as its factorization.

42436631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 29.

The square root of 42436631 is about 6514.3404117378. The cubic root of 42436631 is about 348.8030705926.

The spelling of 42436631 in words is "forty-two million, four hundred thirty-six thousand, six hundred thirty-one".