22557042 has 20 divisors (see below), whose sum is σ = 50544846. Its totient is φ = 7518960.

The previous prime is 22557023. The next prime is 22557061. The reversal of 22557042 is 24075522.

It is an interprime number because it is at equal distance from previous prime (22557023) and next prime (22557061).

It can be written as a sum of positive squares in only one way, i.e., 13682601 + 8874441 = 3699^2 + 2979^2 .

It is a super-4 number, since 4×22557042⁴ (a number of 31 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 22556997 and 22557015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 69459 + ... + 69782.

Almost surely, 2^22557042 is an apocalyptic number.

22557042 is an abundant number, since it is smaller than the sum of its proper divisors (27987804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22557042 is a wasteful number, since it uses less digits than its factorization.

22557042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139255 (or 139246 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 22557042 is about 4749.4254389347. The cubic root of 22557042 is about 282.5491787930.

The spelling of 22557042 in words is "twenty-two million, five hundred fifty-seven thousand, forty-two".