42622451 has 4 divisors (see below), whose sum is σ = 45129672. Its totient is φ = 40115232.

The previous prime is 42622439. The next prime is 42622471. The reversal of 42622451 is 15422624.

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 42622451 - 2⁶ = 42622387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42622451.

It is not an unprimeable number, because it can be changed into a prime (42622421) 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, 1253585 + ... + 1253618.

It is an arithmetic number, because the mean of its divisors is an integer number (11282418).

Almost surely, 2^42622451 is an apocalyptic number.

42622451 is a deficient number, since it is larger than the sum of its proper divisors (2507221).

42622451 is a wasteful number, since it uses less digits than its factorization.

42622451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2507220.

The product of its digits is 3840, while the sum is 26.

The square root of 42622451 is about 6528.5872131725. The cubic root of 42622451 is about 349.3114381037.

The spelling of 42622451 in words is "forty-two million, six hundred twenty-two thousand, four hundred fifty-one".