1244355142 has 16 divisors (see below), whose sum is σ = 1932258240. Its totient is φ = 600299392.

The previous prime is 1244355139. The next prime is 1244355169. The reversal of 1244355142 is 2415534421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85038 + ... + 98590.

It is an arithmetic number, because the mean of its divisors is an integer number (120766140).

Almost surely, 2^1244355142 is an apocalyptic number.

1244355142 is a deficient number, since it is larger than the sum of its proper divisors (687903098).

1244355142 is a wasteful number, since it uses less digits than its factorization.

1244355142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15167.

The product of its digits is 19200, while the sum is 31.

The square root of 1244355142 is about 35275.4183816436. The cubic root of 1244355142 is about 1075.5933676053.

Adding to 1244355142 its reverse (2415534421), we get a palindrome (3659889563).

The spelling of 1244355142 in words is "one billion, two hundred forty-four million, three hundred fifty-five thousand, one hundred forty-two".