7121723747 has 8 divisors (see below), whose sum is σ = 7202048256. Its totient is φ = 7041614472.

The previous prime is 7121723737. The next prime is 7121723753. The reversal of 7121723747 is 7473271217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7121723747 - 2⁴ = 7121723731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7121723737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13208 + ... + 120074.

It is an arithmetic number, because the mean of its divisors is an integer number (900256032).

Almost surely, 2^7121723747 is an apocalyptic number.

7121723747 is a deficient number, since it is larger than the sum of its proper divisors (80324509).

7121723747 is a wasteful number, since it uses less digits than its factorization.

7121723747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107617.

The product of its digits is 115248, while the sum is 41.

The square root of 7121723747 is about 84390.3060013412. The cubic root of 7121723747 is about 1923.9555809258.

The spelling of 7121723747 in words is "seven billion, one hundred twenty-one million, seven hundred twenty-three thousand, seven hundred forty-seven".