142222664 has 8 divisors (see below), whose sum is σ = 266667510. Its totient is φ = 71111328.

The previous prime is 142222621. The next prime is 142222669. The reversal of 142222664 is 466222241.

It can be written as a sum of positive squares in only one way, i.e., 137124100 + 5098564 = 11710^2 + 2258^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (142222669) 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, 8888909 + ... + 8888924.

Almost surely, 2^142222664 is an apocalyptic number.

It is an amenable number.

142222664 is a deficient number, since it is larger than the sum of its proper divisors (124444846).

142222664 is a wasteful number, since it uses less digits than its factorization.

142222664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17777839 (or 17777835 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 142222664 is about 11925.7144020809. The cubic root of 142222664 is about 521.9828926245.

The spelling of 142222664 in words is "one hundred forty-two million, two hundred twenty-two thousand, six hundred sixty-four".