1253123544 has 64 divisors (see below), whose sum is σ = 3237062400. Its totient is φ = 403998336.

The previous prime is 1253123483. The next prime is 1253123569. The reversal of 1253123544 is 4453213521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100402 + ... + 112190.

It is an arithmetic number, because the mean of its divisors is an integer number (50579100).

Almost surely, 2^1253123544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1253123544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1618531200).

1253123544 is an abundant number, since it is smaller than the sum of its proper divisors (1983938856).

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

1253123544 is a wasteful number, since it uses less digits than its factorization.

1253123544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11944 (or 11940 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 1253123544 is about 35399.4850810008. The cubic root of 1253123544 is about 1078.1138615543.

The spelling of 1253123544 in words is "one billion, two hundred fifty-three million, one hundred twenty-three thousand, five hundred forty-four".