7040738021 has 8 divisors (see below), whose sum is σ = 7439488320. Its totient is φ = 6644806272.

The previous prime is 7040738017. The next prime is 7040738101. The reversal of 7040738021 is 1208370407.

It is a happy number.

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 7040738021 - 2² = 7040738017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7040732021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 699500 + ... + 709493.

It is an arithmetic number, because the mean of its divisors is an integer number (929936040).

Almost surely, 2^7040738021 is an apocalyptic number.

It is an amenable number.

7040738021 is a deficient number, since it is larger than the sum of its proper divisors (398750299).

7040738021 is a wasteful number, since it uses less digits than its factorization.

7040738021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409275.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 7040738021 is about 83909.1057096904. The cubic root of 7040738021 is about 1916.6349133727.

The spelling of 7040738021 in words is "seven billion, forty million, seven hundred thirty-eight thousand, twenty-one".