142210321 has 16 divisors (see below), whose sum is σ = 164851200. Its totient is φ = 121242880.

The previous prime is 142210319. The next prime is 142210333. The reversal of 142210321 is 123012241.

142210321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142210321 - 2¹ = 142210319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142210295 and 142210304.

It is not an unprimeable number, because it can be changed into a prime (142210301) 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, 58080 + ... + 60478.

It is an arithmetic number, because the mean of its divisors is an integer number (10303200).

Almost surely, 2^142210321 is an apocalyptic number.

142210321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142210321 is a deficient number, since it is larger than the sum of its proper divisors (22640879).

142210321 is a wasteful number, since it uses less digits than its factorization.

142210321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2744.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 142210321 is about 11925.1968956491. The cubic root of 142210321 is about 521.9677918404.

Adding to 142210321 its reverse (123012241), we get a palindrome (265222562).

The spelling of 142210321 in words is "one hundred forty-two million, two hundred ten thousand, three hundred twenty-one".