1253173143 has 16 divisors (see below), whose sum is σ = 1729490400. Its totient is φ = 806184960.

The previous prime is 1253173111. The next prime is 1253173169. The reversal of 1253173143 is 3413713521.

It is not a de Polignac number, because 1253173143 - 2⁵ = 1253173111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1253173143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253173043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224223 + ... + 229743.

It is an arithmetic number, because the mean of its divisors is an integer number (108093150).

Almost surely, 2^1253173143 is an apocalyptic number.

1253173143 is a deficient number, since it is larger than the sum of its proper divisors (476317257).

1253173143 is a wasteful number, since it uses less digits than its factorization.

1253173143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8162.

The product of its digits is 7560, while the sum is 30.

The square root of 1253173143 is about 35400.1856351065. The cubic root of 1253173143 is about 1078.1280853884.

Adding to 1253173143 its reverse (3413713521), we get a palindrome (4666886664).

The spelling of 1253173143 in words is "one billion, two hundred fifty-three million, one hundred seventy-three thousand, one hundred forty-three".