142546640 has 40 divisors (see below), whose sum is σ = 345835008. Its totient is φ = 54538880.

The previous prime is 142546601. The next prime is 142546669. The reversal of 142546640 is 46645241.

142546640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 142546597 and 142546606.

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, 36896 + ... + 40575.

Almost surely, 2^142546640 is an apocalyptic number.

142546640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142546640 is an abundant number, since it is smaller than the sum of its proper divisors (203288368).

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

142546640 is a wasteful number, since it uses less digits than its factorization.

142546640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77507 (or 77501 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 142546640 is about 11939.2897611206. The cubic root of 142546640 is about 522.3789422160.

The spelling of 142546640 in words is "one hundred forty-two million, five hundred forty-six thousand, six hundred forty".