142213312 has 28 divisors (see below), whose sum is σ = 283057600. Its totient is φ = 70891776.

The previous prime is 142213277. The next prime is 142213319. The reversal of 142213312 is 213312241.

It is a happy number.

It is a super-2 number, since 2×142213312² = 40449252220018688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142213312.

It is not an unprimeable number, because it can be changed into a prime (142213319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19153 + ... + 25519.

It is an arithmetic number, because the mean of its divisors is an integer number (10109200).

Almost surely, 2^142213312 is an apocalyptic number.

It is an amenable number.

142213312 is a deficient number, since it is larger than the sum of its proper divisors (140844288).

142213312 is an equidigital number, since it uses as much as digits as its factorization.

142213312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6728 (or 6718 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 142213312 is about 11925.3223017242. The cubic root of 142213312 is about 521.9714511967.

Adding to 142213312 its reverse (213312241), we get a palindrome (355525553).

The spelling of 142213312 in words is "one hundred forty-two million, two hundred thirteen thousand, three hundred twelve".