1144264442 has 16 divisors (see below), whose sum is σ = 1778398632. Its totient is φ = 551738880.

The previous prime is 1144264427. The next prime is 1144264447. The reversal of 1144264442 is 2444624411.

It can be written as a sum of positive squares in 4 ways, for example, as 984014161 + 160250281 = 31369^2 + 12659^2 .

It is a super-2 number, since 2×1144264442² = 2618682226451142728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1144264399 and 1144264408.

It is not an unprimeable number, because it can be changed into a prime (1144264447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60059 + ... + 76782.

Almost surely, 2^1144264442 is an apocalyptic number.

1144264442 is a deficient number, since it is larger than the sum of its proper divisors (634134190).

1144264442 is a wasteful number, since it uses less digits than its factorization.

1144264442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136993.

The product of its digits is 24576, while the sum is 32.

The square root of 1144264442 is about 33826.9780205090. The cubic root of 1144264442 is about 1045.9448859378.

Adding to 1144264442 its reverse (2444624411), we get a palindrome (3588888853).

The spelling of 1144264442 in words is "one billion, one hundred forty-four million, two hundred sixty-four thousand, four hundred forty-two".