142020205431 has 16 divisors (see below), whose sum is σ = 203968535904. Its totient is φ = 87379012224.

The previous prime is 142020205421. The next prime is 142020205513. The reversal of 142020205431 is 134502020241.

It is not a de Polignac number, because 142020205431 - 2⁷ = 142020205303 is a prime.

It is a super-2 number, since 2×142020205431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142020205421) 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, 183136 + ... + 563541.

It is an arithmetic number, because the mean of its divisors is an integer number (12748033494).

Almost surely, 2^142020205431 is an apocalyptic number.

142020205431 is a deficient number, since it is larger than the sum of its proper divisors (61948330473).

142020205431 is a wasteful number, since it uses less digits than its factorization.

142020205431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751570.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 142020205431 its reverse (134502020241), we get a palindrome (276522225672).

The spelling of 142020205431 in words is "one hundred forty-two billion, twenty million, two hundred five thousand, four hundred thirty-one".