7485342021 has 12 divisors (see below), whose sum is σ = 10891083372. Its totient is φ = 4953802176.

The previous prime is 7485342013. The next prime is 7485342023. The reversal of 7485342021 is 1202435847.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1786752900 + 5698589121 = 42270^2 + 75489^2 .

It is not a de Polignac number, because 7485342021 - 2³ = 7485342013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7485342023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3034186 + ... + 3036651.

It is an arithmetic number, because the mean of its divisors is an integer number (907590281).

Almost surely, 2^7485342021 is an apocalyptic number.

It is an amenable number.

7485342021 is a deficient number, since it is larger than the sum of its proper divisors (3405741351).

7485342021 is a wasteful number, since it uses less digits than its factorization.

7485342021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6070980 (or 6070977 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 7485342021 is about 86517.8711076504. The cubic root of 7485342021 is about 1956.1577878721.

Adding to 7485342021 its reverse (1202435847), we get a palindrome (8687777868).

The spelling of 7485342021 in words is "seven billion, four hundred eighty-five million, three hundred forty-two thousand, twenty-one".