1243044142 has 4 divisors (see below), whose sum is σ = 1864566216. Its totient is φ = 621522070.

The previous prime is 1243044091. The next prime is 1243044151. The reversal of 1243044142 is 2414403421.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 310761034 + ... + 310761037.

It is an arithmetic number, because the mean of its divisors is an integer number (466141554).

Almost surely, 2^1243044142 is an apocalyptic number.

1243044142 is a deficient number, since it is larger than the sum of its proper divisors (621522074).

1243044142 is an equidigital number, since it uses as much as digits as its factorization.

1243044142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621522073.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1243044142 is about 35256.8311395111. The cubic root of 1243044142 is about 1075.2155016313.

Adding to 1243044142 its reverse (2414403421), we get a palindrome (3657447563).

The spelling of 1243044142 in words is "one billion, two hundred forty-three million, forty-four thousand, one hundred forty-two".