1242426833 has 8 divisors (see below), whose sum is σ = 1272020520. Its totient is φ = 1213130880.

The previous prime is 1242426817. The next prime is 1242426839. The reversal of 1242426833 is 3386242421.

It can be written as a sum of positive squares in 4 ways, for example, as 41319184 + 1201107649 = 6428^2 + 34657^2 .

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 1242426833 - 2⁴ = 1242426817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1242426793 and 1242426802.

It is not an unprimeable number, because it can be changed into a prime (1242426839) 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, 65978 + ... + 82691.

It is an arithmetic number, because the mean of its divisors is an integer number (159002565).

Almost surely, 2^1242426833 is an apocalyptic number.

It is an amenable number.

1242426833 is a deficient number, since it is larger than the sum of its proper divisors (29593687).

1242426833 is a wasteful number, since it uses less digits than its factorization.

1242426833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148867.

The product of its digits is 55296, while the sum is 35.

The square root of 1242426833 is about 35248.0755928604. The cubic root of 1242426833 is about 1075.0374843248.

The spelling of 1242426833 in words is "one billion, two hundred forty-two million, four hundred twenty-six thousand, eight hundred thirty-three".