142609540 has 24 divisors (see below), whose sum is σ = 300209112. Its totient is φ = 56904960.

The previous prime is 142609531. The next prime is 142609561. The reversal of 142609540 is 45906241.

It can be written as a sum of positive squares in 4 ways, for example, as 1855044 + 140754496 = 1362^2 + 11864^2 .

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, 49 + ... + 16888.

It is an arithmetic number, because the mean of its divisors is an integer number (12508713).

Almost surely, 2^142609540 is an apocalyptic number.

142609540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142609540 is an abundant number, since it is smaller than the sum of its proper divisors (157599572).

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

142609540 is a wasteful number, since it uses less digits than its factorization.

142609540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17367 (or 17365 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 142609540 is about 11941.9236306384. The cubic root of 142609540 is about 522.4557657355.

The spelling of 142609540 in words is "one hundred forty-two million, six hundred nine thousand, five hundred forty".