42294131 has 4 divisors (see below), whose sum is σ = 46139064. Its totient is φ = 38449200.

The previous prime is 42294121. The next prime is 42294139. The reversal of 42294131 is 13149224.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42294131 is a prime.

It is a super-2 number, since 2×42294131² = 3577587034090322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42294131.

It is not an unprimeable number, because it can be changed into a prime (42294139) 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, 1922450 + ... + 1922471.

It is an arithmetic number, because the mean of its divisors is an integer number (11534766).

Almost surely, 2^42294131 is an apocalyptic number.

42294131 is a deficient number, since it is larger than the sum of its proper divisors (3844933).

42294131 is a wasteful number, since it uses less digits than its factorization.

42294131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3844932.

The product of its digits is 1728, while the sum is 26.

The square root of 42294131 is about 6503.3938063137. The cubic root of 42294131 is about 348.4122119139.

The spelling of 42294131 in words is "forty-two million, two hundred ninety-four thousand, one hundred thirty-one".