42940233 has 32 divisors (see below), whose sum is σ = 73809920. Its totient is φ = 24163920.

The previous prime is 42940169. The next prime is 42940237. The reversal of 42940233 is 33204924.

It is a happy number.

42940233 is a `hidden beast` number, since 429 + 4 + 0 + 233 = 666.

It is not a de Polignac number, because 42940233 - 2⁶ = 42940169 is a prime.

It is a super-2 number, since 2×42940233² = 3687727220188578, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42940197 and 42940206.

It is not an unprimeable number, because it can be changed into a prime (42940237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10968 + ... + 14358.

It is an arithmetic number, because the mean of its divisors is an integer number (2306560).

Almost surely, 2^42940233 is an apocalyptic number.

It is an amenable number.

42940233 is a deficient number, since it is larger than the sum of its proper divisors (30869687).

42940233 is a wasteful number, since it uses less digits than its factorization.

42940233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3474 (or 3468 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 42940233 is about 6552.8797486296. The cubic root of 42940233 is about 350.1774148152.

The spelling of 42940233 in words is "forty-two million, nine hundred forty thousand, two hundred thirty-three".