123042442330021 has 8 divisors (see below), whose sum is σ = 126049370767488. Its totient is φ = 120035794524000.

The previous prime is 123042442329949. The next prime is 123042442330061. The reversal of 123042442330021 is 120033244240321.

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 123042442330021 - 2¹³ = 123042442321829 is a prime.

It is a super-2 number, since 2×123042442330021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123042442330061) 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, 69270115 + ... + 71024176.

It is an arithmetic number, because the mean of its divisors is an integer number (15756171345936).

Almost surely, 2^{123042442330021} is an apocalyptic number.

It is an amenable number.

123042442330021 is a deficient number, since it is larger than the sum of its proper divisors (3006928437467).

123042442330021 is a wasteful number, since it uses less digits than its factorization.

123042442330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140315723.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 123042442330021 its reverse (120033244240321), we get a palindrome (243075686570342).

The spelling of 123042442330021 in words is "one hundred twenty-three trillion, forty-two billion, four hundred forty-two million, three hundred thirty thousand, twenty-one".