22142402 has 8 divisors (see below), whose sum is σ = 33307200. Its totient is φ = 11040004.

The previous prime is 22142387. The next prime is 22142411. The reversal of 22142402 is 20424122.

It is a happy number.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 14702 + ... + 16137.

It is an arithmetic number, because the mean of its divisors is an integer number (4163400).

Almost surely, 2^22142402 is an apocalyptic number.

22142402 is a deficient number, since it is larger than the sum of its proper divisors (11164798).

22142402 is a wasteful number, since it uses less digits than its factorization.

22142402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31200.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 22142402 is about 4705.5713786957. The cubic root of 22142402 is about 280.8072030170.

Adding to 22142402 its reverse (20424122), we get a palindrome (42566524).

The spelling of 22142402 in words is "twenty-two million, one hundred forty-two thousand, four hundred two".