126456215340 has 96 divisors (see below), whose sum is σ = 435787591680. Its totient is φ = 26680870656.

The previous prime is 126456215323. The next prime is 126456215393. The reversal of 126456215340 is 43512654621.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11574780 + ... + 11585699.

It is an arithmetic number, because the mean of its divisors is an integer number (4539454080).

Almost surely, 2^126456215340 is an apocalyptic number.

126456215340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126456215340 is an abundant number, since it is smaller than the sum of its proper divisors (309331376340).

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

126456215340 is a wasteful number, since it uses less digits than its factorization.

126456215340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23160511 (or 23160509 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

Adding to 126456215340 its reverse (43512654621), we get a palindrome (169968869961).

The spelling of 126456215340 in words is "one hundred twenty-six billion, four hundred fifty-six million, two hundred fifteen thousand, three hundred forty".