123042221040 has 80 divisors (see below), whose sum is σ = 381998148768. Its totient is φ = 32762462208.

The previous prime is 123042221039. The next prime is 123042221041. The reversal of 123042221040 is 40122240321.

123042221040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (123042221039) and next prime (123042221041).

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 123042220998 and 123042221016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123042221041) 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, 219369 + ... + 542408.

Almost surely, 2^123042221040 is an apocalyptic number.

123042221040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123042221040 is an abundant number, since it is smaller than the sum of its proper divisors (258955927728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123042221040 is a wasteful number, since it uses less digits than its factorization.

123042221040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762466 (or 762460 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 123042221040 its reverse (40122240321), we get a palindrome (163164461361).

The spelling of 123042221040 in words is "one hundred twenty-three billion, forty-two million, two hundred twenty-one thousand, forty".