20231142 has 16 divisors (see below), whose sum is σ = 40506480. Its totient is φ = 6736352.

The previous prime is 20231137. The next prime is 20231149. The reversal of 20231142 is 24113202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20231149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9268 + ... + 11240.

It is an arithmetic number, because the mean of its divisors is an integer number (2531655).

Almost surely, 2^20231142 is an apocalyptic number.

20231142 is an abundant number, since it is smaller than the sum of its proper divisors (20275338).

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

20231142 is a wasteful number, since it uses less digits than its factorization.

20231142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3687.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20231142 is about 4497.9041786147. The cubic root of 20231142 is about 272.4834521276.

Adding to 20231142 its reverse (24113202), we get a palindrome (44344344).

The spelling of 20231142 in words is "twenty million, two hundred thirty-one thousand, one hundred forty-two".