142120254433520 has 40 divisors (see below), whose sum is σ = 360468645338160. Its totient is φ = 51680092520960.

The previous prime is 142120254433439. The next prime is 142120254433523. The reversal of 142120254433520 is 25334452021241.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×142120254433520² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142120254433523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80750143685 + ... + 80750145444.

It is an arithmetic number, because the mean of its divisors is an integer number (9011716133454).

Almost surely, 2^{142120254433520} is an apocalyptic number.

142120254433520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142120254433520 is an abundant number, since it is smaller than the sum of its proper divisors (218348390904640).

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

142120254433520 is a wasteful number, since it uses less digits than its factorization.

142120254433520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161500289153 (or 161500289147 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 38.

The spelling of 142120254433520 in words is "one hundred forty-two trillion, one hundred twenty billion, two hundred fifty-four million, four hundred thirty-three thousand, five hundred twenty".