7721410126 has 16 divisors (see below), whose sum is σ = 11968265088. Its totient is φ = 3736137360.

The previous prime is 7721410091. The next prime is 7721410127. The reversal of 7721410126 is 6210141277.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7721410127) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5215 + ... + 124378.

It is an arithmetic number, because the mean of its divisors is an integer number (748016568).

Almost surely, 2^7721410126 is an apocalyptic number.

7721410126 is a deficient number, since it is larger than the sum of its proper divisors (4246854962).

7721410126 is an equidigital number, since it uses as much as digits as its factorization.

7721410126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129688 (or 129626 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 7721410126 is about 87871.5547034420. The cubic root of 7721410126 is about 1976.5093520961.

The spelling of 7721410126 in words is "seven billion, seven hundred twenty-one million, four hundred ten thousand, one hundred twenty-six".