142221316 has 6 divisors (see below), whose sum is σ = 248887310. Its totient is φ = 71110656.

The previous prime is 142221311. The next prime is 142221323. The reversal of 142221316 is 613122241.

It can be written as a sum of positive squares in only one way, i.e., 123298816 + 18922500 = 11104^2 + 4350^2 .

It is not an unprimeable number, because it can be changed into a prime (142221311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17777661 + ... + 17777668.

Almost surely, 2^142221316 is an apocalyptic number.

It is an amenable number.

142221316 is a deficient number, since it is larger than the sum of its proper divisors (106665994).

142221316 is a wasteful number, since it uses less digits than its factorization.

142221316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35555333 (or 35555331 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 142221316 is about 11925.6578854166. The cubic root of 142221316 is about 521.9812434847.

Adding to 142221316 its reverse (613122241), we get a palindrome (755343557).

The spelling of 142221316 in words is "one hundred forty-two million, two hundred twenty-one thousand, three hundred sixteen".