126287315840 has 192 divisors, whose sum is σ = 353535386400. Its totient is φ = 43010150400.

The previous prime is 126287315801. The next prime is 126287315851. The reversal of 126287315840 is 48513782621.

It is a super-2 number, since 2×126287315840² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4722026 + ... + 4748694.

Almost surely, 2^126287315840 is an apocalyptic number.

126287315840 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 126287315840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176767693200).

126287315840 is an abundant number, since it is smaller than the sum of its proper divisors (227248070560).

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

126287315840 is a wasteful number, since it uses less digits than its factorization.

126287315840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26853 (or 26834 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 126287315840 in words is "one hundred twenty-six billion, two hundred eighty-seven million, three hundred fifteen thousand, eight hundred forty".