1302400253 has 12 divisors (see below), whose sum is σ = 1652768352. Its totient is φ = 1014856920.

The previous prime is 1302400213. The next prime is 1302400261. The reversal of 1302400253 is 3520042031.

It is a happy number.

It is not a de Polignac number, because 1302400253 - 2⁶ = 1302400189 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 (1302400213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1207625 + ... + 1208702.

It is an arithmetic number, because the mean of its divisors is an integer number (137730696).

Almost surely, 2^1302400253 is an apocalyptic number.

It is an amenable number.

1302400253 is a deficient number, since it is larger than the sum of its proper divisors (350368099).

1302400253 is a wasteful number, since it uses less digits than its factorization.

1302400253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2416352 (or 2416345 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 1302400253 is about 36088.7829248923. The cubic root of 1302400253 is about 1092.0641672791.

Adding to 1302400253 its reverse (3520042031), we get a palindrome (4822442284).

The spelling of 1302400253 in words is "one billion, three hundred two million, four hundred thousand, two hundred fifty-three".