1242378833 has 8 divisors (see below), whose sum is σ = 1326545088. Its totient is φ = 1160725104.

The previous prime is 1242378829. The next prime is 1242378877. The reversal of 1242378833 is 3388732421.

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 1242378833 - 2² = 1242378829 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242308833) 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, 627110 + ... + 629087.

It is an arithmetic number, because the mean of its divisors is an integer number (165818136).

Almost surely, 2^1242378833 is an apocalyptic number.

It is an amenable number.

1242378833 is a deficient number, since it is larger than the sum of its proper divisors (84166255).

1242378833 is a wasteful number, since it uses less digits than its factorization.

1242378833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256263.

The product of its digits is 193536, while the sum is 41.

The square root of 1242378833 is about 35247.3946980483. The cubic root of 1242378833 is about 1075.0236397902.

The spelling of 1242378833 in words is "one billion, two hundred forty-two million, three hundred seventy-eight thousand, eight hundred thirty-three".