142215660 has 36 divisors (see below), whose sum is σ = 431388048. Its totient is φ = 37924128.

The previous prime is 142215649. The next prime is 142215673. The reversal of 142215660 is 66512241.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 394864 + ... + 395223.

Almost surely, 2^142215660 is an apocalyptic number.

142215660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142215660 is an abundant number, since it is smaller than the sum of its proper divisors (289172388).

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

142215660 is a wasteful number, since it uses less digits than its factorization.

142215660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790102 (or 790097 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 142215660 is about 11925.4207472944. The cubic root of 142215660 is about 521.9743238350.

It can be divided in two parts, 14221 and 5660, that added together give a square (19881 = 141²).

The spelling of 142215660 in words is "one hundred forty-two million, two hundred fifteen thousand, six hundred sixty".