7121275 has 12 divisors (see below), whose sum is σ = 10092112. Its totient is φ = 4883040.

The previous prime is 7121267. The next prime is 7121321. The reversal of 7121275 is 5721217.

It is a happy number.

It is not a de Polignac number, because 7121275 - 2³ = 7121267 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20172 + ... + 20521.

Almost surely, 2^7121275 is an apocalyptic number.

7121275 is a deficient number, since it is larger than the sum of its proper divisors (2970837).

7121275 is a wasteful number, since it uses less digits than its factorization.

7121275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40710 (or 40705 counting only the distinct ones).

The product of its digits is 980, while the sum is 25.

The square root of 7121275 is about 2668.5717153564. The cubic root of 7121275 is about 192.3915169949.

It can be divided in two parts, 7121 and 275, that added together give a square (7396 = 86²).

The spelling of 7121275 in words is "seven million, one hundred twenty-one thousand, two hundred seventy-five".