123040013442 has 16 divisors (see below), whose sum is σ = 246635517600. Its totient is φ = 40920756032.

The previous prime is 123040013441. The next prime is 123040013443. The reversal of 123040013442 is 244310040321.

It is an interprime number because it is at equal distance from previous prime (123040013441) and next prime (123040013443).

It is not an unprimeable number, because it can be changed into a prime (123040013441) 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, 23142567 + ... + 23147882.

It is an arithmetic number, because the mean of its divisors is an integer number (15414719850).

Almost surely, 2^123040013442 is an apocalyptic number.

123040013442 is an abundant number, since it is smaller than the sum of its proper divisors (123595504158).

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

123040013442 is a wasteful number, since it uses less digits than its factorization.

123040013442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46290897.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 123040013442 its reverse (244310040321), we get a palindrome (367350053763).

The spelling of 123040013442 in words is "one hundred twenty-three billion, forty million, thirteen thousand, four hundred forty-two".