1242349479 has 36 divisors (see below), whose sum is σ = 2091576240. Its totient is φ = 708523200.

The previous prime is 1242349453. The next prime is 1242349483. The reversal of 1242349479 is 9749432421.

It is not a de Polignac number, because 1242349479 - 2²⁰ = 1241300903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242349499) 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 35 ways as a sum of consecutive naturals, for example, 248454 + ... + 253404.

It is an arithmetic number, because the mean of its divisors is an integer number (58099340).

Almost surely, 2^1242349479 is an apocalyptic number.

1242349479 is a deficient number, since it is larger than the sum of its proper divisors (849226761).

1242349479 is a wasteful number, since it uses less digits than its factorization.

1242349479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5540 (or 5530 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 1242349479 is about 35246.9782960185. The cubic root of 1242349479 is about 1075.0151731047.

The spelling of 1242349479 in words is "one billion, two hundred forty-two million, three hundred forty-nine thousand, four hundred seventy-nine".