142231664 has 10 divisors (see below), whose sum is σ = 275573880. Its totient is φ = 71115824.

The previous prime is 142231657. The next prime is 142231669. The reversal of 142231664 is 466132241.

It is a super-3 number, since 3×142231664³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142231669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4444724 + ... + 4444755.

It is an arithmetic number, because the mean of its divisors is an integer number (27557388).

Almost surely, 2^142231664 is an apocalyptic number.

It is an amenable number.

142231664 is a deficient number, since it is larger than the sum of its proper divisors (133342216).

142231664 is an equidigital number, since it uses as much as digits as its factorization.

142231664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8889487 (or 8889481 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 142231664 is about 11926.0917319967. The cubic root of 142231664 is about 521.9939029347.

The spelling of 142231664 in words is "one hundred forty-two million, two hundred thirty-one thousand, six hundred sixty-four".