120142423321 has 4 divisors (see below), whose sum is σ = 120589049700. Its totient is φ = 119695796944.

The previous prime is 120142423319. The next prime is 120142423337. The reversal of 120142423321 is 123324241021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123324241021 = 2663 ⋅46310267.

It can be written as a sum of positive squares in 2 ways, for example, as 69939091600 + 50203331721 = 264460^2 + 224061^2 .

It is a cyclic number.

It is not a de Polignac number, because 120142423321 - 2¹ = 120142423319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120142423301) 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, 223312786 + ... + 223313323.

It is an arithmetic number, because the mean of its divisors is an integer number (30147262425).

Almost surely, 2^120142423321 is an apocalyptic number.

It is an amenable number.

120142423321 is a deficient number, since it is larger than the sum of its proper divisors (446626379).

120142423321 is an equidigital number, since it uses as much as digits as its factorization.

120142423321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446626378.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 120142423321 its reverse (123324241021), we get a palindrome (243466664342).

The spelling of 120142423321 in words is "one hundred twenty billion, one hundred forty-two million, four hundred twenty-three thousand, three hundred twenty-one".