42932891 has 4 divisors (see below), whose sum is σ = 43181232. Its totient is φ = 42684552.

The previous prime is 42932887. The next prime is 42932899. The reversal of 42932891 is 19823924.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42932891 - 2² = 42932887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42932899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123911 + ... + 124256.

It is an arithmetic number, because the mean of its divisors is an integer number (10795308).

Almost surely, 2^42932891 is an apocalyptic number.

42932891 is a deficient number, since it is larger than the sum of its proper divisors (248341).

42932891 is a wasteful number, since it uses less digits than its factorization.

42932891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248340.

The product of its digits is 31104, while the sum is 38.

The square root of 42932891 is about 6552.3195129664. The cubic root of 42932891 is about 350.1574556849.

The spelling of 42932891 in words is "forty-two million, nine hundred thirty-two thousand, eight hundred ninety-one".