20442123310 has 48 divisors (see below), whose sum is σ = 44664340896. Its totient is φ = 6703996992.

The previous prime is 20442123281. The next prime is 20442123319. The reversal of 20442123310 is 1332124402.

It is a super-2 number, since 2×20442123310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20442123319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 895657 + ... + 918196.

It is an arithmetic number, because the mean of its divisors is an integer number (930507102).

Almost surely, 2^20442123310 is an apocalyptic number.

20442123310 is an abundant number, since it is smaller than the sum of its proper divisors (24222217586).

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

20442123310 is a wasteful number, since it uses less digits than its factorization.

20442123310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813897 (or 1813890 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20442123310 its reverse (1332124402), we get a palindrome (21774247712).

The spelling of 20442123310 in words is "twenty billion, four hundred forty-two million, one hundred twenty-three thousand, three hundred ten".