126999492192 has 96 divisors (see below), whose sum is σ = 370865174400. Its totient is φ = 42281737344.

The previous prime is 126999492187. The next prime is 126999492199. The reversal of 126999492192 is 291294999621.

126999492192 is a `hidden beast` number, since 126 + 9 + 9 + 9 + 492 + 19 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×126999492192² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126999492199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 625659 + ... + 803397.

It is an arithmetic number, because the mean of its divisors is an integer number (3863178900).

Almost surely, 2^126999492192 is an apocalyptic number.

126999492192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126999492192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185432587200).

126999492192 is an abundant number, since it is smaller than the sum of its proper divisors (243865682208).

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

126999492192 is a wasteful number, since it uses less digits than its factorization.

126999492192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178585 (or 178571 counting only the distinct ones).

The product of its digits is 11337408, while the sum is 63.

The spelling of 126999492192 in words is "one hundred twenty-six billion, nine hundred ninety-nine million, four hundred ninety-two thousand, one hundred ninety-two".