13123430442 has 12 divisors (see below), whose sum is σ = 28434099330. Its totient is φ = 4374476808.

The previous prime is 13123430423. The next prime is 13123430471. The reversal of 13123430442 is 24403432131.

13123430442 is a `hidden beast` number, since 1 + 312 + 3 + 4 + 304 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6944055561 + 6179374881 = 83331^2 + 78609^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 364539717 + ... + 364539752.

Almost surely, 2^13123430442 is an apocalyptic number.

13123430442 is an abundant number, since it is smaller than the sum of its proper divisors (15310668888).

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

13123430442 is a wasteful number, since it uses less digits than its factorization.

13123430442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729079477 (or 729079474 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 13123430442 its reverse (24403432131), we get a palindrome (37526862573).

The spelling of 13123430442 in words is "thirteen billion, one hundred twenty-three million, four hundred thirty thousand, four hundred forty-two".