1242297 has 30 divisors (see below), whose sum is σ = 2165658. Its totient is φ = 707616.

The previous prime is 1242289. The next prime is 1242317. The reversal of 1242297 is 7922421.

It can be written as a sum of positive squares in only one way, i.e., 670761 + 571536 = 819^2 + 756^2 .

It is not a de Polignac number, because 1242297 - 2³ = 1242289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1242297.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242217) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 3813 + ... + 4125.

2^1242297 is an apocalyptic number.

It is an amenable number.

1242297 is a deficient number, since it is larger than the sum of its proper divisors (923361).

1242297 is an equidigital number, since it uses as much as digits as its factorization.

1242297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 323 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 1242297 is about 1114.5837788161. The cubic root of 1242297 is about 107.5000036056.

The spelling of 1242297 in words is "one million, two hundred forty-two thousand, two hundred ninety-seven".