1243422531126 has 40 divisors (see below), whose sum is σ = 2797287963624. Its totient is φ = 412822872000.

The previous prime is 1243422531089. The next prime is 1243422531179. The reversal of 1243422531126 is 6211352243421.

It is a happy number.

1243422531126 is a `hidden beast` number, since 1 + 243 + 42 + 253 + 1 + 126 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15249075 + ... + 15330398.

Almost surely, 2^{1243422531126} is an apocalyptic number.

1243422531126 is an abundant number, since it is smaller than the sum of its proper divisors (1553865432498).

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

1243422531126 is a wasteful number, since it uses less digits than its factorization.

1243422531126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30579738 (or 30579729 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

Adding to 1243422531126 its reverse (6211352243421), we get a palindrome (7454774774547).

The spelling of 1243422531126 in words is "one trillion, two hundred forty-three billion, four hundred twenty-two million, five hundred thirty-one thousand, one hundred twenty-six".