1242233413 has 4 divisors (see below), whose sum is σ = 1250570700. Its totient is φ = 1233896128.

The previous prime is 1242233371. The next prime is 1242233429. The reversal of 1242233413 is 3143322421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 539029089 + 703204324 = 23217^2 + 26518^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242233413 - 2¹³ = 1242225221 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 (1242239413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4168420 + ... + 4168717.

It is an arithmetic number, because the mean of its divisors is an integer number (312642675).

Almost surely, 2^1242233413 is an apocalyptic number.

It is an amenable number.

1242233413 is a deficient number, since it is larger than the sum of its proper divisors (8337287).

1242233413 is an equidigital number, since it uses as much as digits as its factorization.

1242233413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8337286.

The product of its digits is 3456, while the sum is 25.

The square root of 1242233413 is about 35245.3317901818. The cubic root of 1242233413 is about 1074.9816944422.

Adding to 1242233413 its reverse (3143322421), we get a palindrome (4385555834).

The spelling of 1242233413 in words is "one billion, two hundred forty-two million, two hundred thirty-three thousand, four hundred thirteen".