142321853 has 4 divisors (see below), whose sum is σ = 142349820. Its totient is φ = 142293888.

The previous prime is 142321849. The next prime is 142321889. The reversal of 142321853 is 358123241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57350329 + 84971524 = 7573^2 + 9218^2 .

It is a cyclic number.

It is not a de Polignac number, because 142321853 - 2² = 142321849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142321253) 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, 3950 + ... + 17327.

It is an arithmetic number, because the mean of its divisors is an integer number (35587455).

Almost surely, 2^142321853 is an apocalyptic number.

It is an amenable number.

142321853 is a deficient number, since it is larger than the sum of its proper divisors (27967).

142321853 is an equidigital number, since it uses as much as digits as its factorization.

142321853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27966.

The product of its digits is 5760, while the sum is 29.

The square root of 142321853 is about 11929.8722960474. The cubic root of 142321853 is about 522.1042116137.

The spelling of 142321853 in words is "one hundred forty-two million, three hundred twenty-one thousand, eight hundred fifty-three".