42934381 has 4 divisors (see below), whose sum is σ = 49067872. Its totient is φ = 36800892.

The previous prime is 42934379. The next prime is 42934387. The reversal of 42934381 is 18343924.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42934381 - 2¹ = 42934379 is a prime.

It is a super-2 number, since 2×42934381² = 3686722143706322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42934387) 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, 3066735 + ... + 3066748.

It is an arithmetic number, because the mean of its divisors is an integer number (12266968).

Almost surely, 2^42934381 is an apocalyptic number.

It is an amenable number.

42934381 is a deficient number, since it is larger than the sum of its proper divisors (6133491).

42934381 is an equidigital number, since it uses as much as digits as its factorization.

42934381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6133490.

The product of its digits is 20736, while the sum is 34.

The square root of 42934381 is about 6552.4332121739. The cubic root of 42934381 is about 350.1615064143.

The spelling of 42934381 in words is "forty-two million, nine hundred thirty-four thousand, three hundred eighty-one".