126404711321 has 64 divisors (see below), whose sum is σ = 154983628800. Its totient is φ = 100814789376.

The previous prime is 126404711281. The next prime is 126404711327. The reversal of 126404711321 is 123117404621.

It is not a de Polignac number, because 126404711321 - 2¹⁸ = 126404449177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126404711327) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 287937620 + ... + 287938058.

It is an arithmetic number, because the mean of its divisors is an integer number (2421619200).

Almost surely, 2^126404711321 is an apocalyptic number.

It is an amenable number.

126404711321 is a deficient number, since it is larger than the sum of its proper divisors (28578917479).

126404711321 is a wasteful number, since it uses less digits than its factorization.

126404711321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918.

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 126404711321 in words is "one hundred twenty-six billion, four hundred four million, seven hundred eleven thousand, three hundred twenty-one".