142020154520 has 32 divisors (see below), whose sum is σ = 319580979120. Its totient is φ = 56801727360.

The previous prime is 142020154477. The next prime is 142020154589. The reversal of 142020154520 is 25451020241.

It is a self number, because there is not a number n which added to its sum of digits gives 142020154520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173879 + ... + 560601.

Almost surely, 2^142020154520 is an apocalyptic number.

142020154520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142020154520 is an abundant number, since it is smaller than the sum of its proper divisors (177560824600).

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

142020154520 is a wasteful number, since it uses less digits than its factorization.

142020154520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395915 (or 395911 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 142020154520 its reverse (25451020241), we get a palindrome (167471174761).

The spelling of 142020154520 in words is "one hundred forty-two billion, twenty million, one hundred fifty-four thousand, five hundred twenty".