1144012440 has 32 divisors (see below), whose sum is σ = 3432037680. Its totient is φ = 305069952.

The previous prime is 1144012423. The next prime is 1144012481. The reversal of 1144012440 is 442104411.

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, 4766599 + ... + 4766838.

Almost surely, 2^1144012440 is an apocalyptic number.

1144012440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1144012440 is an abundant number, since it is smaller than the sum of its proper divisors (2288025240).

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

1144012440 is a wasteful number, since it uses less digits than its factorization.

1144012440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9533451 (or 9533447 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1144012440 is about 33823.2529482307. The cubic root of 1144012440 is about 1045.8680972908.

Adding to 1144012440 its reverse (442104411), we get a palindrome (1586116851).

The spelling of 1144012440 in words is "one billion, one hundred forty-four million, twelve thousand, four hundred forty".