1253042035303 has 4 divisors (see below), whose sum is σ = 1256591729808. Its totient is φ = 1249492340800.

The previous prime is 1253042035291. The next prime is 1253042035331. The reversal of 1253042035303 is 3035302403521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1253042035303 is a prime.

It is a super-2 number, since 2×1253042035303² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253042035403) 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, 1774846723 + ... + 1774847428.

It is an arithmetic number, because the mean of its divisors is an integer number (314147932452).

Almost surely, 2^{1253042035303} is an apocalyptic number.

1253042035303 is a deficient number, since it is larger than the sum of its proper divisors (3549694505).

1253042035303 is an equidigital number, since it uses as much as digits as its factorization.

1253042035303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549694504.

The product of its (nonzero) digits is 32400, while the sum is 31.

Adding to 1253042035303 its reverse (3035302403521), we get a palindrome (4288344438824).

The spelling of 1253042035303 in words is "one trillion, two hundred fifty-three billion, forty-two million, thirty-five thousand, three hundred three".