142445721375 has 48 divisors (see below), whose sum is σ = 256846524480. Its totient is φ = 75952008000.

The previous prime is 142445721317. The next prime is 142445721403. The reversal of 142445721375 is 573127544241.

142445721375 is a `hidden beast` number, since 1 + 4 + 2 + 4 + 4 + 572 + 1 + 3 + 75 = 666.

It is not a de Polignac number, because 142445721375 - 2²² = 142441527071 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 142445721375.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5250345 + ... + 5277405.

It is an arithmetic number, because the mean of its divisors is an integer number (5350969260).

Almost surely, 2^142445721375 is an apocalyptic number.

142445721375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142445721375 is a deficient number, since it is larger than the sum of its proper divisors (114400803105).

142445721375 is a wasteful number, since it uses less digits than its factorization.

142445721375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31761 (or 31748 counting only the distinct ones).

The product of its digits is 940800, while the sum is 45.

The spelling of 142445721375 in words is "one hundred forty-two billion, four hundred forty-five million, seven hundred twenty-one thousand, three hundred seventy-five".