1245142442 has 8 divisors (see below), whose sum is σ = 1870602336. Its totient is φ = 621608332.

The previous prime is 1245142411. The next prime is 1245142453. The reversal of 1245142442 is 2442415421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479828 + ... + 482415.

It is an arithmetic number, because the mean of its divisors is an integer number (233825292).

Almost surely, 2^1245142442 is an apocalyptic number.

1245142442 is a deficient number, since it is larger than the sum of its proper divisors (625459894).

1245142442 is an equidigital number, since it uses as much as digits as its factorization.

1245142442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962892.

The product of its digits is 10240, while the sum is 29.

The square root of 1245142442 is about 35286.5759461017. The cubic root of 1245142442 is about 1075.8201614147.

Adding to 1245142442 its reverse (2442415421), we get a palindrome (3687557863).

The spelling of 1245142442 in words is "one billion, two hundred forty-five million, one hundred forty-two thousand, four hundred forty-two".