7122387 has 16 divisors (see below), whose sum is σ = 10010880. Its totient is φ = 4495392.

The previous prime is 7122377. The next prime is 7122407. The reversal of 7122387 is 7832217.

It is not a de Polignac number, because 7122387 - 2¹⁴ = 7106003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7122307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7048 + ... + 7994.

It is an arithmetic number, because the mean of its divisors is an integer number (625680).

Almost surely, 2^7122387 is an apocalyptic number.

7122387 is a deficient number, since it is larger than the sum of its proper divisors (2888493).

7122387 is a wasteful number, since it uses less digits than its factorization.

7122387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082.

The product of its digits is 4704, while the sum is 30.

The square root of 7122387 is about 2668.7800583787. The cubic root of 7122387 is about 192.4015305685.

The spelling of 7122387 in words is "seven million, one hundred twenty-two thousand, three hundred eighty-seven".