7122315 has 32 divisors (see below), whose sum is σ = 12027456. Its totient is φ = 3594240.

The previous prime is 7122307. The next prime is 7122319. The reversal of 7122315 is 5132217.

It is not a de Polignac number, because 7122315 - 2³ = 7122307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7122291 and 7122300.

It is not an unprimeable number, because it can be changed into a prime (7122319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22599 + ... + 22911.

It is an arithmetic number, because the mean of its divisors is an integer number (375858).

Almost surely, 2^7122315 is an apocalyptic number.

7122315 is a deficient number, since it is larger than the sum of its proper divisors (4905141).

7122315 is a wasteful number, since it uses less digits than its factorization.

7122315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399.

The product of its digits is 420, while the sum is 21.

The square root of 7122315 is about 2668.7665690352. The cubic root of 7122315 is about 192.4008822391.

The spelling of 7122315 in words is "seven million, one hundred twenty-two thousand, three hundred fifteen".