142412644 has 18 divisors (see below), whose sum is σ = 273939302. Its totient is φ = 64732800.

The previous prime is 142412623. The next prime is 142412663. The reversal of 142412644 is 446214241.

It can be written as a sum of positive squares in only one way, i.e., 135443044 + 6969600 = 11638^2 + 2640^2 .

It is a super-2 number, since 2×142412644² = 40562722342141472, which contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 146637 + ... + 147604.

Almost surely, 2^142412644 is an apocalyptic number.

It is an amenable number.

142412644 is a deficient number, since it is larger than the sum of its proper divisors (131526658).

142412644 is a wasteful number, since it uses less digits than its factorization.

142412644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294267 (or 294254 counting only the distinct ones).

The product of its digits is 6144, while the sum is 28.

The square root of 142412644 is about 11933.6768851851. The cubic root of 142412644 is about 522.2152095298.

Adding to 142412644 its reverse (446214241), we get a palindrome (588626885).

The spelling of 142412644 in words is "one hundred forty-two million, four hundred twelve thousand, six hundred forty-four".