7442770521 has 32 divisors (see below), whose sum is σ = 10193154048. Its totient is φ = 4829529600.

The previous prime is 7442770519. The next prime is 7442770529. The reversal of 7442770521 is 1250772447.

It is not a de Polignac number, because 7442770521 - 2¹ = 7442770519 is a prime.

It is a super-2 number, since 2×7442770521² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7442770521.

It is not an unprimeable number, because it can be changed into a prime (7442770529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4700896 + ... + 4702478.

It is an arithmetic number, because the mean of its divisors is an integer number (318536064).

Almost surely, 2^7442770521 is an apocalyptic number.

It is an amenable number.

7442770521 is a deficient number, since it is larger than the sum of its proper divisors (2750383527).

7442770521 is a wasteful number, since it uses less digits than its factorization.

7442770521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941.

The product of its (nonzero) digits is 109760, while the sum is 39.

The square root of 7442770521 is about 86271.4930959236. The cubic root of 7442770521 is about 1952.4423065521.

The spelling of 7442770521 in words is "seven billion, four hundred forty-two million, seven hundred seventy thousand, five hundred twenty-one".