142213744 has 10 divisors (see below), whose sum is σ = 275539160. Its totient is φ = 71106864.

The previous prime is 142213733. The next prime is 142213783. The reversal of 142213744 is 447312241.

142213744 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4444164 + ... + 4444195.

It is an arithmetic number, because the mean of its divisors is an integer number (27553916).

Almost surely, 2^142213744 is an apocalyptic number.

It is an amenable number.

142213744 is a deficient number, since it is larger than the sum of its proper divisors (133325416).

142213744 is an equidigital number, since it uses as much as digits as its factorization.

142213744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8888367 (or 8888361 counting only the distinct ones).

The product of its digits is 5376, while the sum is 28.

The square root of 142213744 is about 11925.3404144284. The cubic root of 142213744 is about 521.9719797254.

Adding to 142213744 its reverse (447312241), we get a palindrome (589525985).

The spelling of 142213744 in words is "one hundred forty-two million, two hundred thirteen thousand, seven hundred forty-four".