1253597142 has 16 divisors (see below), whose sum is σ = 2865364992. Its totient is φ = 358170600.

The previous prime is 1253597101. The next prime is 1253597159. The reversal of 1253597142 is 2417953521.

It is a self number, because there is not a number n which added to its sum of digits gives 1253597142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14923734 + ... + 14923817.

It is an arithmetic number, because the mean of its divisors is an integer number (179085312).

Almost surely, 2^1253597142 is an apocalyptic number.

1253597142 is an abundant number, since it is smaller than the sum of its proper divisors (1611767850).

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

1253597142 is a wasteful number, since it uses less digits than its factorization.

1253597142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29847563.

The product of its digits is 75600, while the sum is 39.

The square root of 1253597142 is about 35406.1737836779. The cubic root of 1253597142 is about 1078.2496630777.

The spelling of 1253597142 in words is "one billion, two hundred fifty-three million, five hundred ninety-seven thousand, one hundred forty-two".