1244011142 has 32 divisors (see below), whose sum is σ = 2176805664. Its totient is φ = 526912000.

The previous prime is 1244011141. The next prime is 1244011163. The reversal of 1244011142 is 2411104421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244011141) 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, 21308 + ... + 54240.

It is an arithmetic number, because the mean of its divisors is an integer number (68025177).

Almost surely, 2^1244011142 is an apocalyptic number.

1244011142 is a deficient number, since it is larger than the sum of its proper divisors (932794522).

1244011142 is a wasteful number, since it uses less digits than its factorization.

1244011142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33064.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1244011142 is about 35270.5421279571. The cubic root of 1244011142 is about 1075.4942431118.

Adding to 1244011142 its reverse (2411104421), we get a palindrome (3655115563).

The spelling of 1244011142 in words is "one billion, two hundred forty-four million, eleven thousand, one hundred forty-two".