22421442 has 16 divisors (see below), whose sum is σ = 44989920. Its totient is φ = 7449312.

The previous prime is 22421431. The next prime is 22421449. The reversal of 22421442 is 24412422.

It is a super-2 number, since 2×22421442² = 1005442122718728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22421449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4092 + ... + 7847.

It is an arithmetic number, because the mean of its divisors is an integer number (2811870).

Almost surely, 2^22421442 is an apocalyptic number.

22421442 is an abundant number, since it is smaller than the sum of its proper divisors (22568478).

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

22421442 is a wasteful number, since it uses less digits than its factorization.

22421442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12257.

The product of its digits is 1024, while the sum is 21.

The square root of 22421442 is about 4735.1285093438. The cubic root of 22421442 is about 281.9818659432.

Adding to 22421442 its reverse (24412422), we get a palindrome (46833864).

The spelling of 22421442 in words is "twenty-two million, four hundred twenty-one thousand, four hundred forty-two".