1245151142 has 4 divisors (see below), whose sum is σ = 1867726716. Its totient is φ = 622575570.

The previous prime is 1245151139. The next prime is 1245151151. The reversal of 1245151142 is 2411515421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311287784 + ... + 311287787.

It is an arithmetic number, because the mean of its divisors is an integer number (466931679).

Almost surely, 2^1245151142 is an apocalyptic number.

1245151142 is a deficient number, since it is larger than the sum of its proper divisors (622575574).

1245151142 is an equidigital number, since it uses as much as digits as its factorization.

1245151142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622575573.

The product of its digits is 1600, while the sum is 26.

The square root of 1245151142 is about 35286.6992222282. The cubic root of 1245151142 is about 1075.8226670486.

Adding to 1245151142 its reverse (2411515421), we get a palindrome (3656666563).

The spelling of 1245151142 in words is "one billion, two hundred forty-five million, one hundred fifty-one thousand, one hundred forty-two".