1253120412 has 12 divisors (see below), whose sum is σ = 2923947656. Its totient is φ = 417706800.

The previous prime is 1253120381. The next prime is 1253120413. The reversal of 1253120412 is 2140213521.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253120413) 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, 52213339 + ... + 52213362.

Almost surely, 2^1253120412 is an apocalyptic number.

1253120412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1253120412 is an abundant number, since it is smaller than the sum of its proper divisors (1670827244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1253120412 is a wasteful number, since it uses less digits than its factorization.

1253120412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104426708 (or 104426706 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1253120412 is about 35399.4408430416. The cubic root of 1253120412 is about 1078.1129633573.

Adding to 1253120412 its reverse (2140213521), we get a palindrome (3393333933).

The spelling of 1253120412 in words is "one billion, two hundred fifty-three million, one hundred twenty thousand, four hundred twelve".