142728507477820 has 48 divisors (see below), whose sum is σ = 327004666210656. Its totient is φ = 51897048320000.

The previous prime is 142728507477769. The next prime is 142728507477827. The reversal of 142728507477820 is 28774705827241.

It is a super-2 number, since 2×142728507477820² (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 (142728507477827) 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, 23711581 + ... + 29115220.

It is an arithmetic number, because the mean of its divisors is an integer number (6812597212722).

Almost surely, 2^{142728507477820} is an apocalyptic number.

142728507477820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142728507477820 is an abundant number, since it is smaller than the sum of its proper divisors (184276158732836).

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

142728507477820 is a wasteful number, since it uses less digits than its factorization.

142728507477820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52839102 (or 52839100 counting only the distinct ones).

The product of its (nonzero) digits is 98344960, while the sum is 64.

The spelling of 142728507477820 in words is "one hundred forty-two trillion, seven hundred twenty-eight billion, five hundred seven million, four hundred seventy-seven thousand, eight hundred twenty".