142732840 has 24 divisors (see below), whose sum is σ = 321318990. Its totient is φ = 57062912.

The previous prime is 142732829. The next prime is 142732841. The reversal of 142732840 is 48237241.

It can be written as a sum of positive squares in 3 ways, for example, as 112063396 + 30669444 = 10586^2 + 5538^2 .

It is a super-2 number, since 2×142732840² = 40745327228931200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142732841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74616 + ... + 76504.

Almost surely, 2^142732840 is an apocalyptic number.

142732840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142732840 is an abundant number, since it is smaller than the sum of its proper divisors (178586150).

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

142732840 is an frugal number, since it uses more digits than its factorization.

142732840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789 (or 1896 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 142732840 is about 11947.0850001161. The cubic root of 142732840 is about 522.6062938591.

The spelling of 142732840 in words is "one hundred forty-two million, seven hundred thirty-two thousand, eight hundred forty".