42997899 has 24 divisors (see below), whose sum is σ = 67898368. Its totient is φ = 23685120.

The previous prime is 42997897. The next prime is 42997909. The reversal of 42997899 is 99879924.

It is not a de Polignac number, because 42997899 - 2¹ = 42997897 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42997897) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167179 + ... + 167435.

Almost surely, 2^42997899 is an apocalyptic number.

42997899 is a deficient number, since it is larger than the sum of its proper divisors (24900469).

42997899 is an equidigital number, since it uses as much as digits as its factorization.

42997899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555 (or 298 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 57.

The square root of 42997899 is about 6557.2783225970. The cubic root of 42997899 is about 350.3341000238.

The spelling of 42997899 in words is "forty-two million, nine hundred ninety-seven thousand, eight hundred ninety-nine".