42185963 has 2 divisors, whose sum is σ = 42185964. Its totient is φ = 42185962.

The previous prime is 42185939. The next prime is 42185977. The reversal of 42185963 is 36958124.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42185963 - 2⁸ = 42185707 is a prime.

It is not a weakly prime, because it can be changed into another prime (42185903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21092981 + 21092982.

It is an arithmetic number, because the mean of its divisors is an integer number (21092982).

Almost surely, 2^42185963 is an apocalyptic number.

42185963 is a deficient number, since it is larger than the sum of its proper divisors (1).

42185963 is an equidigital number, since it uses as much as digits as its factorization.

42185963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 38.

The square root of 42185963 is about 6495.0722089904. The cubic root of 42185963 is about 348.1149348417.

The spelling of 42185963 in words is "forty-two million, one hundred eighty-five thousand, nine hundred sixty-three".