42911998 has 16 divisors (see below), whose sum is σ = 67576320. Its totient is φ = 20410200.

The previous prime is 42911989. The next prime is 42912007. The reversal of 42911998 is 89911924.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42911989) and next prime (42912007).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2208 + ... + 9523.

It is an arithmetic number, because the mean of its divisors is an integer number (4223520).

Almost surely, 2^42911998 is an apocalyptic number.

42911998 is a deficient number, since it is larger than the sum of its proper divisors (24664322).

42911998 is a wasteful number, since it uses less digits than its factorization.

42911998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11823.

The product of its digits is 46656, while the sum is 43.

The square root of 42911998 is about 6550.7249980441. The cubic root of 42911998 is about 350.1006458855.

The spelling of 42911998 in words is "forty-two million, nine hundred eleven thousand, nine hundred ninety-eight".