142400243020 has 48 divisors (see below), whose sum is σ = 344219339520. Its totient is φ = 48471689664.

The previous prime is 142400242973. The next prime is 142400243081. The reversal of 142400243020 is 20342004241.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 142400242982 and 142400243000.

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, 3639334 + ... + 3678253.

It is an arithmetic number, because the mean of its divisors is an integer number (7171236240).

Almost surely, 2^142400243020 is an apocalyptic number.

142400243020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142400243020 is an abundant number, since it is smaller than the sum of its proper divisors (201819096500).

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

142400243020 is a wasteful number, since it uses less digits than its factorization.

142400243020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7317742 (or 7317740 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 142400243020 its reverse (20342004241), we get a palindrome (162742247261).

The spelling of 142400243020 in words is "one hundred forty-two billion, four hundred million, two hundred forty-three thousand, twenty".