20143023142 has 32 divisors (see below), whose sum is σ = 33231389184. Its totient is φ = 9081019200.

The previous prime is 20143023133. The next prime is 20143023181. The reversal of 20143023142 is 24132034102.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4551943 + ... + 4556365.

It is an arithmetic number, because the mean of its divisors is an integer number (1038480912).

Almost surely, 2^20143023142 is an apocalyptic number.

20143023142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20143023142 is a deficient number, since it is larger than the sum of its proper divisors (13088366042).

20143023142 is a wasteful number, since it uses less digits than its factorization.

20143023142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6084.

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

Adding to 20143023142 its reverse (24132034102), we get a palindrome (44275057244).

The spelling of 20143023142 in words is "twenty billion, one hundred forty-three million, twenty-three thousand, one hundred forty-two".