1242053033 has 4 divisors (see below), whose sum is σ = 1337595588. Its totient is φ = 1146510480.

The previous prime is 1242052957. The next prime is 1242053063. The reversal of 1242053033 is 3303502421.

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 656025769 + 586027264 = 25613^2 + 24208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242053033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242053063) 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, 47771258 + ... + 47771283.

It is an arithmetic number, because the mean of its divisors is an integer number (334398897).

Almost surely, 2^1242053033 is an apocalyptic number.

1242053033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1242053033 is a deficient number, since it is larger than the sum of its proper divisors (95542555).

1242053033 is an equidigital number, since it uses as much as digits as its factorization.

1242053033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95542554.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 1242053033 is about 35242.7727768404. The cubic root of 1242053033 is about 1074.9296605860.

Adding to 1242053033 its reverse (3303502421), we get a palindrome (4545555454).

The spelling of 1242053033 in words is "one billion, two hundred forty-two million, fifty-three thousand, thirty-three".