1242359 has 2 divisors, whose sum is σ = 1242360. Its totient is φ = 1242358.

The previous prime is 1242347. The next prime is 1242361. The reversal of 1242359 is 9532421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1242359 - 2⁸ = 1242103 is a prime.

Together with 1242361, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621179 + 621180.

It is an arithmetic number, because the mean of its divisors is an integer number (621180).

2^1242359 is an apocalyptic number.

1242359 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242359 is an equidigital number, since it uses as much as digits as its factorization.

1242359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 1242359 is about 1114.6115915421. The cubic root of 1242359 is about 107.5017919297.

The spelling of 1242359 in words is "one million, two hundred forty-two thousand, three hundred fifty-nine".