1242579343 has 2 divisors, whose sum is σ = 1242579344. Its totient is φ = 1242579342.

The previous prime is 1242579311. The next prime is 1242579367. The reversal of 1242579343 is 3439752421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1242579343 - 2⁵ = 1242579311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1242579296 and 1242579305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242679343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621289671 + 621289672.

It is an arithmetic number, because the mean of its divisors is an integer number (621289672).

Almost surely, 2^1242579343 is an apocalyptic number.

1242579343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242579343 is an equidigital number, since it uses as much as digits as its factorization.

1242579343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 40.

The square root of 1242579343 is about 35250.2389069918. The cubic root of 1242579343 is about 1075.0814700830.

The spelling of 1242579343 in words is "one billion, two hundred forty-two million, five hundred seventy-nine thousand, three hundred forty-three".