142864660 has 12 divisors (see below), whose sum is σ = 300015828. Its totient is φ = 57145856.

The previous prime is 142864637. The next prime is 142864679. The reversal of 142864660 is 66468241.

It can be written as a sum of positive squares in 2 ways, for example, as 16032016 + 126832644 = 4004^2 + 11262^2 .

It is a super-2 number, since 2×142864660² = 40820622153831200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3571597 + ... + 3571636.

It is an arithmetic number, because the mean of its divisors is an integer number (25001319).

Almost surely, 2^142864660 is an apocalyptic number.

142864660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142864660 is an abundant number, since it is smaller than the sum of its proper divisors (157151168).

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

142864660 is a wasteful number, since it uses less digits than its factorization.

142864660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7143242 (or 7143240 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 142864660 is about 11952.6005538544. The cubic root of 142864660 is about 522.7671275885.

The spelling of 142864660 in words is "one hundred forty-two million, eight hundred sixty-four thousand, six hundred sixty".