126321134540 has 24 divisors (see below), whose sum is σ = 268470462960. Its totient is φ = 49919676608.

The previous prime is 126321134509. The next prime is 126321134551. The reversal of 126321134540 is 45431123621.

It is a junction number, because it is equal to n+sod(n) for n = 126321134497 and 126321134506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38046875 + ... + 38050194.

It is an arithmetic number, because the mean of its divisors is an integer number (11186269290).

Almost surely, 2^126321134540 is an apocalyptic number.

126321134540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126321134540 is an abundant number, since it is smaller than the sum of its proper divisors (142149328420).

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

126321134540 is a wasteful number, since it uses less digits than its factorization.

126321134540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76097161 (or 76097159 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 126321134540 in words is "one hundred twenty-six billion, three hundred twenty-one million, one hundred thirty-four thousand, five hundred forty".