142274321 has 16 divisors (see below), whose sum is σ = 164947200. Its totient is φ = 120201408.

The previous prime is 142274317. The next prime is 142274333. The reversal of 142274321 is 123472241.

It is a cyclic number.

It is not a de Polignac number, because 142274321 - 2² = 142274317 is a prime.

It is a super-2 number, since 2×142274321² = 40483964832022082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142274351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200315 + ... + 201023.

It is an arithmetic number, because the mean of its divisors is an integer number (10309200).

Almost surely, 2^142274321 is an apocalyptic number.

It is an amenable number.

142274321 is a deficient number, since it is larger than the sum of its proper divisors (22672879).

142274321 is a wasteful number, since it uses less digits than its factorization.

142274321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088.

The product of its digits is 2688, while the sum is 26.

The square root of 142274321 is about 11927.8799876592. The cubic root of 142274321 is about 522.0460818182.

The spelling of 142274321 in words is "one hundred forty-two million, two hundred seventy-four thousand, three hundred twenty-one".