142847664 has 80 divisors (see below), whose sum is σ = 393403392. Its totient is φ = 44560384.

The previous prime is 142847647. The next prime is 142847701. The reversal of 142847664 is 466748241.

It is a super-2 number, since 2×142847664² = 40810910220513792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50512 + ... + 53264.

Almost surely, 2^142847664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142847664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196701696).

142847664 is an abundant number, since it is smaller than the sum of its proper divisors (250555728).

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

142847664 is a wasteful number, since it uses less digits than its factorization.

142847664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2834 (or 2828 counting only the distinct ones).

The product of its digits is 258048, while the sum is 42.

The square root of 142847664 is about 11951.8895577227. The cubic root of 142847664 is about 522.7463963070.

The spelling of 142847664 in words is "one hundred forty-two million, eight hundred forty-seven thousand, six hundred sixty-four".