22420342 has 24 divisors (see below), whose sum is σ = 41183640. Its totient is φ = 9102240.

The previous prime is 22420339. The next prime is 22420357. The reversal of 22420342 is 24302422.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4159 + ... + 7882.

It is an arithmetic number, because the mean of its divisors is an integer number (1715985).

Almost surely, 2^22420342 is an apocalyptic number.

22420342 is a deficient number, since it is larger than the sum of its proper divisors (18763298).

22420342 is a wasteful number, since it uses less digits than its factorization.

22420342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12076 (or 12069 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 22420342 is about 4735.0123547885. The cubic root of 22420342 is about 281.9772545073.

Adding to 22420342 its reverse (24302422), we get a palindrome (46722764).

The spelling of 22420342 in words is "twenty-two million, four hundred twenty thousand, three hundred forty-two".