42015667 has 2 divisors, whose sum is σ = 42015668. Its totient is φ = 42015666.

The previous prime is 42015629. The next prime is 42015671. The reversal of 42015667 is 76651024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42015667 - 2⁷ = 42015539 is a prime.

It is not a weakly prime, because it can be changed into another prime (42015367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21007833 + 21007834.

It is an arithmetic number, because the mean of its divisors is an integer number (21007834).

Almost surely, 2^42015667 is an apocalyptic number.

42015667 is a deficient number, since it is larger than the sum of its proper divisors (1).

42015667 is an equidigital number, since it uses as much as digits as its factorization.

42015667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 42015667 is about 6481.9493209990. The cubic root of 42015667 is about 347.6458804723.

The spelling of 42015667 in words is "forty-two million, fifteen thousand, six hundred sixty-seven".