1242708479 has 4 divisors (see below), whose sum is σ = 1242804360. Its totient is φ = 1242612600.

The previous prime is 1242708461. The next prime is 1242708487. The reversal of 1242708479 is 9748072421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1242708479 - 2¹⁶ = 1242642943 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 (1242708179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24764 + ... + 55665.

It is an arithmetic number, because the mean of its divisors is an integer number (310701090).

Almost surely, 2^1242708479 is an apocalyptic number.

1242708479 is a deficient number, since it is larger than the sum of its proper divisors (95881).

1242708479 is an equidigital number, since it uses as much as digits as its factorization.

1242708479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95880.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 1242708479 is about 35252.0705633017. The cubic root of 1242708479 is about 1075.1187116784.

The spelling of 1242708479 in words is "one billion, two hundred forty-two million, seven hundred eight thousand, four hundred seventy-nine".