142020312321 has 32 divisors (see below), whose sum is σ = 196689600000. Its totient is φ = 91042818048.

The previous prime is 142020312311. The next prime is 142020312349. The reversal of 142020312321 is 123213020241.

It is not a de Polignac number, because 142020312321 - 2⁷ = 142020312193 is a prime.

It is a super-2 number, since 2×142020312321² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142020312311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54433465 + ... + 54436073.

It is an arithmetic number, because the mean of its divisors is an integer number (6146550000).

Almost surely, 2^142020312321 is an apocalyptic number.

It is an amenable number.

142020312321 is a deficient number, since it is larger than the sum of its proper divisors (54669287679).

142020312321 is a wasteful number, since it uses less digits than its factorization.

142020312321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4953.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 142020312321 its reverse (123213020241), we get a palindrome (265233332562).

The spelling of 142020312321 in words is "one hundred forty-two billion, twenty million, three hundred twelve thousand, three hundred twenty-one".