7421121352 has 16 divisors (see below), whose sum is σ = 13915655100. Its totient is φ = 3710280000.

The previous prime is 7421121317. The next prime is 7421121361. The reversal of 7421121352 is 2531211247.

It can be written as a sum of positive squares in 2 ways, for example, as 6893316676 + 527804676 = 83026^2 + 22974^2 .

It is a super-2 number, since 2×7421121352² (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 7421121352.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115102 + ... + 167602.

Almost surely, 2^7421121352 is an apocalyptic number.

It is an amenable number.

7421121352 is a deficient number, since it is larger than the sum of its proper divisors (6494533748).

7421121352 is a wasteful number, since it uses less digits than its factorization.

7421121352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70176 (or 70172 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 7421121352 is about 86145.9305597194. The cubic root of 7421121352 is about 1950.5474116877.

Adding to 7421121352 its reverse (2531211247), we get a palindrome (9952332599).

The spelling of 7421121352 in words is "seven billion, four hundred twenty-one million, one hundred twenty-one thousand, three hundred fifty-two".