1113544442 has 4 divisors (see below), whose sum is σ = 1670316666. Its totient is φ = 556772220.

The previous prime is 1113544441. The next prime is 1113544463. The reversal of 1113544442 is 2444453111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2444453111 = 2039 ⋅1198849.

It can be written as a sum of positive squares in only one way, i.e., 1110955561 + 2588881 = 33331^2 + 1609^2 .

It is not an unprimeable number, because it can be changed into a prime (1113544441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278386109 + ... + 278386112.

Almost surely, 2^1113544442 is an apocalyptic number.

1113544442 is a deficient number, since it is larger than the sum of its proper divisors (556772224).

1113544442 is an equidigital number, since it uses as much as digits as its factorization.

1113544442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556772223.

The product of its digits is 7680, while the sum is 29.

The square root of 1113544442 is about 33369.8133348091. The cubic root of 1113544442 is about 1036.4997098585.

Adding to 1113544442 its reverse (2444453111), we get a palindrome (3557997553).

The spelling of 1113544442 in words is "one billion, one hundred thirteen million, five hundred forty-four thousand, four hundred forty-two".