142561672 has 16 divisors (see below), whose sum is σ = 291603600. Its totient is φ = 64800720.

The previous prime is 142561649. The next prime is 142561687. The reversal of 142561672 is 276165241.

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 3 ways as a sum of consecutive naturals, for example, 809922 + ... + 810097.

It is an arithmetic number, because the mean of its divisors is an integer number (18225225).

Almost surely, 2^142561672 is an apocalyptic number.

It is an amenable number.

142561672 is an abundant number, since it is smaller than the sum of its proper divisors (149041928).

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

142561672 is a wasteful number, since it uses less digits than its factorization.

142561672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620036 (or 1620032 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 142561672 is about 11939.9192627086. The cubic root of 142561672 is about 522.3973037484.

The spelling of 142561672 in words is "one hundred forty-two million, five hundred sixty-one thousand, six hundred seventy-two".