7121741405 has 16 divisors (see below), whose sum is σ = 9525055680. Its totient is φ = 5080027392.

The previous prime is 7121741357. The next prime is 7121741441. The reversal of 7121741405 is 5041471217.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7121741405 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2203259 + ... + 2206488.

It is an arithmetic number, because the mean of its divisors is an integer number (595315980).

Almost surely, 2^7121741405 is an apocalyptic number.

It is an amenable number.

7121741405 is a deficient number, since it is larger than the sum of its proper divisors (2403314275).

7121741405 is a wasteful number, since it uses less digits than its factorization.

7121741405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4409788.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 7121741405 is about 84390.4106222976. The cubic root of 7121741405 is about 1923.9571710455.

The spelling of 7121741405 in words is "seven billion, one hundred twenty-one million, seven hundred forty-one thousand, four hundred five".