42960391 has 2 divisors, whose sum is σ = 42960392. Its totient is φ = 42960390.

The previous prime is 42960371. The next prime is 42960403. The reversal of 42960391 is 19306924.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42960391 - 2²⁵ = 9405959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42960301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21480195 + 21480196.

It is an arithmetic number, because the mean of its divisors is an integer number (21480196).

Almost surely, 2^42960391 is an apocalyptic number.

42960391 is a deficient number, since it is larger than the sum of its proper divisors (1).

42960391 is an equidigital number, since it uses as much as digits as its factorization.

42960391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 42960391 is about 6554.4176705486. The cubic root of 42960391 is about 350.2322023772.

The spelling of 42960391 in words is "forty-two million, nine hundred sixty thousand, three hundred ninety-one".