42699967 has 2 divisors, whose sum is σ = 42699968. Its totient is φ = 42699966.

The previous prime is 42699959. The next prime is 42699997. The reversal of 42699967 is 76999624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42699967 - 2³ = 42699959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42699997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21349983 + 21349984.

It is an arithmetic number, because the mean of its divisors is an integer number (21349984).

Almost surely, 2^42699967 is an apocalyptic number.

42699967 is a deficient number, since it is larger than the sum of its proper divisors (1).

42699967 is an equidigital number, since it uses as much as digits as its factorization.

42699967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 52.

The square root of 42699967 is about 6534.5211760312. The cubic root of 42699967 is about 349.5230701314.

The spelling of 42699967 in words is "forty-two million, six hundred ninety-nine thousand, nine hundred sixty-seven".