1242597 has 4 divisors (see below), whose sum is σ = 1656800. Its totient is φ = 828396.

The previous prime is 1242569. The next prime is 1242601. The reversal of 1242597 is 7952421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7952421 = 3 ⋅2650807.

It is not a de Polignac number, because 1242597 - 2¹⁰ = 1241573 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242517) 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 3 ways as a sum of consecutive naturals, for example, 207097 + ... + 207102.

It is an arithmetic number, because the mean of its divisors is an integer number (414200).

2^1242597 is an apocalyptic number.

It is an amenable number.

1242597 is a deficient number, since it is larger than the sum of its proper divisors (414203).

1242597 is an equidigital number, since it uses as much as digits as its factorization.

1242597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414202.

The product of its digits is 5040, while the sum is 30.

The square root of 1242597 is about 1114.7183500777. The cubic root of 1242597 is about 107.5086562346.

The spelling of 1242597 in words is "one million, two hundred forty-two thousand, five hundred ninety-seven".