7126397 has 4 divisors (see below), whose sum is σ = 7137660. Its totient is φ = 7115136.

The previous prime is 7126393. The next prime is 7126429. The reversal of 7126397 is 7936217.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1585081 + 5541316 = 1259^2 + 2354^2 .

It is a cyclic number.

It is not a de Polignac number, because 7126397 - 2² = 7126393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7126393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4622 + ... + 5967.

It is an arithmetic number, because the mean of its divisors is an integer number (1784415).

Almost surely, 2^7126397 is an apocalyptic number.

It is an amenable number.

7126397 is a deficient number, since it is larger than the sum of its proper divisors (11263).

7126397 is a wasteful number, since it uses less digits than its factorization.

7126397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11262.

The product of its digits is 15876, while the sum is 35.

The square root of 7126397 is about 2669.5312322578. The cubic root of 7126397 is about 192.4376320135.

The spelling of 7126397 in words is "seven million, one hundred twenty-six thousand, three hundred ninety-seven".