7421073745 has 4 divisors (see below), whose sum is σ = 8905288500. Its totient is φ = 5936858992.

The previous prime is 7421073743. The next prime is 7421073761. The reversal of 7421073745 is 5473701247.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5764909329 + 1656164416 = 75927^2 + 40696^2 .

It is a cyclic number.

It is not a de Polignac number, because 7421073745 - 2¹ = 7421073743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7421073698 and 7421073707.

It is not an unprimeable number, because it can be changed into a prime (7421073743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 742107370 + ... + 742107379.

It is an arithmetic number, because the mean of its divisors is an integer number (2226322125).

Almost surely, 2^7421073745 is an apocalyptic number.

It is an amenable number.

7421073745 is a deficient number, since it is larger than the sum of its proper divisors (1484214755).

7421073745 is a wasteful number, since it uses less digits than its factorization.

7421073745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484214754.

The product of its (nonzero) digits is 164640, while the sum is 40.

The square root of 7421073745 is about 86145.6542432641. The cubic root of 7421073745 is about 1950.5432407139.

The spelling of 7421073745 in words is "seven billion, four hundred twenty-one million, seventy-three thousand, seven hundred forty-five".