142355423920 has 20 divisors (see below), whose sum is σ = 330976360800. Its totient is φ = 56942169536.

The previous prime is 142355423891. The next prime is 142355423923. The reversal of 142355423920 is 29324553241.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (142355423923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 889721320 + ... + 889721479.

It is an arithmetic number, because the mean of its divisors is an integer number (16548818040).

Almost surely, 2^142355423920 is an apocalyptic number.

142355423920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142355423920 is an abundant number, since it is smaller than the sum of its proper divisors (188620936880).

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

142355423920 is a wasteful number, since it uses less digits than its factorization.

142355423920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779442812 (or 1779442806 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 142355423920 in words is "one hundred forty-two billion, three hundred fifty-five million, four hundred twenty-three thousand, nine hundred twenty".