126405544028 has 12 divisors (see below), whose sum is σ = 221213074992. Its totient is φ = 63201808320.

The previous prime is 126405544007. The next prime is 126405544043. The reversal of 126405544028 is 820445504621.

It is a super-2 number, since 2×126405544028² (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 3 ways as a sum of consecutive naturals, for example, 111476 + ... + 515012.

It is an arithmetic number, because the mean of its divisors is an integer number (18434422916).

Almost surely, 2^126405544028 is an apocalyptic number.

It is an amenable number.

126405544028 is a deficient number, since it is larger than the sum of its proper divisors (94807530964).

126405544028 is a wasteful number, since it uses less digits than its factorization.

126405544028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481852 (or 481850 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 41.

The spelling of 126405544028 in words is "one hundred twenty-six billion, four hundred five million, five hundred forty-four thousand, twenty-eight".