1113402144 has 48 divisors (see below), whose sum is σ = 2940652512. Its totient is φ = 368851968.

The previous prime is 1113402127. The next prime is 1113402149. The reversal of 1113402144 is 4412043111.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1113402144.

It is not an unprimeable number, because it can be changed into a prime (1113402149) 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, 19929 + ... + 51224.

It is an arithmetic number, because the mean of its divisors is an integer number (61263594).

Almost surely, 2^1113402144 is an apocalyptic number.

It is an amenable number.

1113402144 is an abundant number, since it is smaller than the sum of its proper divisors (1827250368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1113402144 is a wasteful number, since it uses less digits than its factorization.

1113402144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71329 (or 71321 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1113402144 is about 33367.6811300995. The cubic root of 1113402144 is about 1036.4555571172.

Adding to 1113402144 its reverse (4412043111), we get a palindrome (5525445255).

The spelling of 1113402144 in words is "one billion, one hundred thirteen million, four hundred two thousand, one hundred forty-four".