1253245142 has 4 divisors (see below), whose sum is σ = 1879867716. Its totient is φ = 626622570.

The previous prime is 1253245139. The next prime is 1253245193. The reversal of 1253245142 is 2415423521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2415423521 = 7 ⋅345060503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313311284 + ... + 313311287.

It is an arithmetic number, because the mean of its divisors is an integer number (469966929).

Almost surely, 2^1253245142 is an apocalyptic number.

1253245142 is a deficient number, since it is larger than the sum of its proper divisors (626622574).

1253245142 is an equidigital number, since it uses as much as digits as its factorization.

1253245142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626622573.

The product of its digits is 9600, while the sum is 29.

The square root of 1253245142 is about 35401.2025501959. The cubic root of 1253245142 is about 1078.1487323511.

Adding to 1253245142 its reverse (2415423521), we get a palindrome (3668668663).

The spelling of 1253245142 in words is "one billion, two hundred fifty-three million, two hundred forty-five thousand, one hundred forty-two".