20231240220142 has 32 divisors (see below), whose sum is σ = 36722550880512. Its totient is φ = 8160433651584.

The previous prime is 20231240220137. The next prime is 20231240220143. The reversal of 20231240220142 is 24102204213202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20231240220143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37556233 + ... + 38091115.

It is an arithmetic number, because the mean of its divisors is an integer number (1147579715016).

Almost surely, 2^{20231240220142} is an apocalyptic number.

20231240220142 is a deficient number, since it is larger than the sum of its proper divisors (16491310660370).

20231240220142 is a wasteful number, since it uses less digits than its factorization.

20231240220142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693832.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 20231240220142 its reverse (24102204213202), we get a palindrome (44333444433344).

The spelling of 20231240220142 in words is "twenty trillion, two hundred thirty-one billion, two hundred forty million, two hundred twenty thousand, one hundred forty-two".