126999492240 has 160 divisors (see below), whose sum is σ = 397150580736. Its totient is φ = 33570547200.

The previous prime is 126999492199. The next prime is 126999492247. The reversal of 126999492240 is 42294999621.

It is a super-2 number, since 2×126999492240² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126999492247) 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 31 ways as a sum of consecutive naturals, for example, 18225237 + ... + 18232203.

Almost surely, 2^126999492240 is an apocalyptic number.

126999492240 is a gapful number since it is divisible by the number (10) 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 126999492240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198575290368).

126999492240 is an abundant number, since it is smaller than the sum of its proper divisors (270151088496).

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

126999492240 is a wasteful number, since it uses less digits than its factorization.

126999492240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7637 (or 7631 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 57.

The spelling of 126999492240 in words is "one hundred twenty-six billion, nine hundred ninety-nine million, four hundred ninety-two thousand, two hundred forty".