42979427 has 2 divisors, whose sum is σ = 42979428. Its totient is φ = 42979426.

The previous prime is 42979399. The next prime is 42979457. The reversal of 42979427 is 72497924.

42979427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42979427 - 2⁸ = 42979171 is a prime.

It is a super-2 number, since 2×42979427² = 3694462290496658, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42979457) 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, 21489713 + 21489714.

It is an arithmetic number, because the mean of its divisors is an integer number (21489714).

Almost surely, 2^42979427 is an apocalyptic number.

42979427 is a deficient number, since it is larger than the sum of its proper divisors (1).

42979427 is an equidigital number, since it uses as much as digits as its factorization.

42979427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 44.

The square root of 42979427 is about 6555.8696600832. The cubic root of 42979427 is about 350.2839247162.

The spelling of 42979427 in words is "forty-two million, nine hundred seventy-nine thousand, four hundred twenty-seven".