42974069 has 2 divisors, whose sum is σ = 42974070. Its totient is φ = 42974068.

The previous prime is 42974047. The next prime is 42974083. The reversal of 42974069 is 96047924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29833444 + 13140625 = 5462^2 + 3625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42974069 is a prime.

It is a super-2 number, since 2×42974069² = 3693541212833522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42976069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21487034 + 21487035.

It is an arithmetic number, because the mean of its divisors is an integer number (21487035).

Almost surely, 2^42974069 is an apocalyptic number.

It is an amenable number.

42974069 is a deficient number, since it is larger than the sum of its proper divisors (1).

42974069 is an equidigital number, since it uses as much as digits as its factorization.

42974069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 42974069 is about 6555.4610059095. The cubic root of 42974069 is about 350.2693681450.

The spelling of 42974069 in words is "forty-two million, nine hundred seventy-four thousand, sixty-nine".