1242307799 has 8 divisors (see below), whose sum is σ = 1314920880. Its totient is φ = 1170417600.

The previous prime is 1242307783. The next prime is 1242307813. The reversal of 1242307799 is 9977032421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1242307799 - 2⁴ = 1242307783 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 (1242307399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177182 + ... + 184059.

It is an arithmetic number, because the mean of its divisors is an integer number (164365110).

Almost surely, 2^1242307799 is an apocalyptic number.

1242307799 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1242307799 is a deficient number, since it is larger than the sum of its proper divisors (72613081).

1242307799 is a wasteful number, since it uses less digits than its factorization.

1242307799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361441.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 1242307799 is about 35246.3870347019. The cubic root of 1242307799 is about 1075.0031509552.

The spelling of 1242307799 in words is "one billion, two hundred forty-two million, three hundred seven thousand, seven hundred ninety-nine".