42622394 has 8 divisors (see below), whose sum is σ = 63989940. Its totient is φ = 21292416.

The previous prime is 42622387. The next prime is 42622397. The reversal of 42622394 is 49322624.

It can be written as a sum of positive squares in 2 ways, for example, as 28462225 + 14160169 = 5335^2 + 3763^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 42622394.

It is not an unprimeable number, because it can be changed into a prime (42622397) 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, 6359 + ... + 11210.

Almost surely, 2^42622394 is an apocalyptic number.

42622394 is a deficient number, since it is larger than the sum of its proper divisors (21367546).

42622394 is a wasteful number, since it uses less digits than its factorization.

42622394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18784.

The product of its digits is 20736, while the sum is 32.

The square root of 42622394 is about 6528.5828477549. The cubic root of 42622394 is about 349.3112823895.

The spelling of 42622394 in words is "forty-two million, six hundred twenty-two thousand, three hundred ninety-four".