142647540 has 48 divisors (see below), whose sum is σ = 456473472. Its totient is φ = 32605056.

The previous prime is 142647529. The next prime is 142647553. The reversal of 142647540 is 45746241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169399 + ... + 170238.

It is an arithmetic number, because the mean of its divisors is an integer number (9509864).

Almost surely, 2^142647540 is an apocalyptic number.

142647540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142647540 is an abundant number, since it is smaller than the sum of its proper divisors (313825932).

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

142647540 is a wasteful number, since it uses less digits than its factorization.

142647540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339656 (or 339654 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 142647540 is about 11943.5145581190. The cubic root of 142647540 is about 522.5021664555.

The spelling of 142647540 in words is "one hundred forty-two million, six hundred forty-seven thousand, five hundred forty".