42294939 has 4 divisors (see below), whose sum is σ = 56393256. Its totient is φ = 28196624.

The previous prime is 42294919. The next prime is 42294979. The reversal of 42294939 is 93949224.

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 42294939 - 2²³ = 33906331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42294939.

It is not an unprimeable number, because it can be changed into a prime (42294919) 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, 7049154 + ... + 7049159.

It is an arithmetic number, because the mean of its divisors is an integer number (14098314).

Almost surely, 2^42294939 is an apocalyptic number.

42294939 is a deficient number, since it is larger than the sum of its proper divisors (14098317).

42294939 is a wasteful number, since it uses less digits than its factorization.

42294939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14098316.

The product of its digits is 139968, while the sum is 42.

The square root of 42294939 is about 6503.4559274281. The cubic root of 42294939 is about 348.4144306242.

The spelling of 42294939 in words is "forty-two million, two hundred ninety-four thousand, nine hundred thirty-nine".