126491422338 has 30 divisors (see below), whose sum is σ = 283444627059. Its totient is φ = 42162298524.

The previous prime is 126491422331. The next prime is 126491422381. The reversal of 126491422338 is 833224194621.

126491422338 is a `hidden beast` number, since 126 + 491 + 4 + 2 + 2 + 3 + 38 = 666.

It can be written as a sum of positive squares in only one way, i.e., 63245711169 + 63245711169 = 251487^2 + 251487^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=251487.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 126491422293 and 126491422302.

It is not an unprimeable number, because it can be changed into a prime (126491422331) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 4512795 + ... + 4540737.

Almost surely, 2^126491422338 is an apocalyptic number.

126491422338 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

126491422338 is an abundant number, since it is smaller than the sum of its proper divisors (156953204721).

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

126491422338 is an frugal number, since it uses more digits than its factorization.

126491422338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55900 (or 27948 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The spelling of 126491422338 in words is "one hundred twenty-six billion, four hundred ninety-one million, four hundred twenty-two thousand, three hundred thirty-eight".