42357979 has 2 divisors, whose sum is σ = 42357980. Its totient is φ = 42357978.

The previous prime is 42357941. The next prime is 42357989. The reversal of 42357979 is 97975324.

42357979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42357979 - 2¹⁷ = 42226907 is a prime.

It is not a weakly prime, because it can be changed into another prime (42357989) 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, 21178989 + 21178990.

It is an arithmetic number, because the mean of its divisors is an integer number (21178990).

Almost surely, 2^42357979 is an apocalyptic number.

42357979 is a deficient number, since it is larger than the sum of its proper divisors (1).

42357979 is an equidigital number, since it uses as much as digits as its factorization.

42357979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 46.

The square root of 42357979 is about 6508.3007767005. The cubic root of 42357979 is about 348.5874469306.

The spelling of 42357979 in words is "forty-two million, three hundred fifty-seven thousand, nine hundred seventy-nine".