142055321 has 8 divisors (see below), whose sum is σ = 146642760. Its totient is φ = 137507328.

The previous prime is 142055279. The next prime is 142055323. The reversal of 142055321 is 123550241.

It can be written as a sum of positive squares in 4 ways, for example, as 47265625 + 94789696 = 6875^2 + 9736^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142055321 - 2¹⁴ = 142038937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142055323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2456 + ... + 17033.

It is an arithmetic number, because the mean of its divisors is an integer number (18330345).

Almost surely, 2^142055321 is an apocalyptic number.

It is an amenable number.

142055321 is a deficient number, since it is larger than the sum of its proper divisors (4587439).

142055321 is a wasteful number, since it uses less digits than its factorization.

142055321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19723.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 142055321 is about 11918.6962793755. The cubic root of 142055321 is about 521.7780859205.

The spelling of 142055321 in words is "one hundred forty-two million, fifty-five thousand, three hundred twenty-one".