142189012 has 48 divisors (see below), whose sum is σ = 290078208. Its totient is φ = 59731200.

The previous prime is 142189009. The next prime is 142189057. The reversal of 142189012 is 210981241.

It is a super-2 number, since 2×142189012² = 40435430267072288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 387253 + ... + 387619.

It is an arithmetic number, because the mean of its divisors is an integer number (6043296).

Almost surely, 2^142189012 is an apocalyptic number.

It is an amenable number.

142189012 is an abundant number, since it is smaller than the sum of its proper divisors (147889196).

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

142189012 is a wasteful number, since it uses less digits than its factorization.

142189012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 142189012 is about 11924.3034178102. The cubic root of 142189012 is about 521.9417197354.

The spelling of 142189012 in words is "one hundred forty-two million, one hundred eighty-nine thousand, twelve".