42673931 has 4 divisors (see below), whose sum is σ = 43666392. Its totient is φ = 41681472.

The previous prime is 42673919. The next prime is 42673963. The reversal of 42673931 is 13937624.

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-42673931 is a prime.

It is a super-2 number, since 2×42673931² = 3642128773985522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42673891 and 42673900.

It is not an unprimeable number, because it can be changed into a prime (42673231) 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, 496166 + ... + 496251.

It is an arithmetic number, because the mean of its divisors is an integer number (10916598).

Almost surely, 2^42673931 is an apocalyptic number.

42673931 is a deficient number, since it is larger than the sum of its proper divisors (992461).

42673931 is an equidigital number, since it uses as much as digits as its factorization.

42673931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992460.

The product of its digits is 27216, while the sum is 35.

The square root of 42673931 is about 6532.5286834426. The cubic root of 42673931 is about 349.4520159557.

The spelling of 42673931 in words is "forty-two million, six hundred seventy-three thousand, nine hundred thirty-one".