7421152705 has 16 divisors (see below), whose sum is σ = 8953136784. Its totient is φ = 5905163520.

The previous prime is 7421152663. The next prime is 7421152709. The reversal of 7421152705 is 5072511247.

It can be written as a sum of positive squares in 8 ways, for example, as 3709784464 + 3711368241 = 60908^2 + 60921^2 .

It is not a de Polignac number, because 7421152705 - 2²⁹ = 6884281793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7421152709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 844635 + ... + 853375.

It is an arithmetic number, because the mean of its divisors is an integer number (559571049).

Almost surely, 2^7421152705 is an apocalyptic number.

It is an amenable number.

7421152705 is a deficient number, since it is larger than the sum of its proper divisors (1531984079).

7421152705 is a wasteful number, since it uses less digits than its factorization.

7421152705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9636.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 7421152705 is about 86146.1125356217. The cubic root of 7421152705 is about 1950.5501585963.

The spelling of 7421152705 in words is "seven billion, four hundred twenty-one million, one hundred fifty-two thousand, seven hundred five".