23220440042 has 8 divisors (see below), whose sum is σ = 34839274500. Its totient is φ = 11607348544.

The previous prime is 23220440039. The next prime is 23220440107. The reversal of 23220440042 is 24004402232.

It can be written as a sum of positive squares in 2 ways, for example, as 19223545201 + 3996894841 = 138649^2 + 63221^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1425617 + ... + 1441812.

Almost surely, 2^23220440042 is an apocalyptic number.

23220440042 is a deficient number, since it is larger than the sum of its proper divisors (11618834458).

23220440042 is a wasteful number, since it uses less digits than its factorization.

23220440042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871480.

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 23220440042 its reverse (24004402232), we get a palindrome (47224842274).

The spelling of 23220440042 in words is "twenty-three billion, two hundred twenty million, four hundred forty thousand, forty-two".