142663684 has 12 divisors (see below), whose sum is σ = 249801804. Its totient is φ = 71291744.

The previous prime is 142663679. The next prime is 142663691. The reversal of 142663684 is 486366241.

It can be written as a sum of positive squares in 2 ways, for example, as 93663684 + 49000000 = 9678^2 + 7000^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1147 + ... + 16930.

It is an arithmetic number, because the mean of its divisors is an integer number (20816817).

Almost surely, 2^142663684 is an apocalyptic number.

It is an amenable number.

142663684 is a deficient number, since it is larger than the sum of its proper divisors (107138120).

142663684 is a wasteful number, since it uses less digits than its factorization.

142663684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20054 (or 20052 counting only the distinct ones).

The product of its digits is 165888, while the sum is 40.

The square root of 142663684 is about 11944.1903869622. The cubic root of 142663684 is about 522.5218769409.

The spelling of 142663684 in words is "one hundred forty-two million, six hundred sixty-three thousand, six hundred eighty-four".