142521768 has 40 divisors (see below), whose sum is σ = 399194730. Its totient is φ = 47507040.

The previous prime is 142521749. The next prime is 142521773. The reversal of 142521768 is 867125241.

It can be written as a sum of positive squares in only one way, i.e., 113167044 + 29354724 = 10638^2 + 5418^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 109323 + ... + 110618.

Almost surely, 2^142521768 is an apocalyptic number.

142521768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

142521768 is an abundant number, since it is smaller than the sum of its proper divisors (256672962).

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

142521768 is a wasteful number, since it uses less digits than its factorization.

142521768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219959 (or 219946 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 142521768 is about 11938.2481126839. The cubic root of 142521768 is about 522.3485583248.

The spelling of 142521768 in words is "one hundred forty-two million, five hundred twenty-one thousand, seven hundred sixty-eight".