1242588797 has 4 divisors (see below), whose sum is σ = 1276172316. Its totient is φ = 1209005280.

The previous prime is 1242588757. The next prime is 1242588799. The reversal of 1242588797 is 7978852421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7978852421 = 23 ⋅346906627.

It can be written as a sum of positive squares in 2 ways, for example, as 915304516 + 327284281 = 30254^2 + 18091^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242588797 - 2¹⁴ = 1242572413 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 (1242588799) 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, 16791704 + ... + 16791777.

It is an arithmetic number, because the mean of its divisors is an integer number (319043079).

Almost surely, 2^1242588797 is an apocalyptic number.

It is an amenable number.

1242588797 is a deficient number, since it is larger than the sum of its proper divisors (33583519).

1242588797 is an equidigital number, since it uses as much as digits as its factorization.

1242588797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33583518.

The product of its digits is 2257920, while the sum is 53.

The square root of 1242588797 is about 35250.3730051187. The cubic root of 1242588797 is about 1075.0841966143.

The spelling of 1242588797 in words is "one billion, two hundred forty-two million, five hundred eighty-eight thousand, seven hundred ninety-seven".