1144213040 has 40 divisors (see below), whose sum is σ = 2679739200. Its totient is φ = 454340096.

The previous prime is 1144212989. The next prime is 1144213043. The reversal of 1144213040 is 403124411.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1144213043) 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, 41240 + ... + 63159.

It is an arithmetic number, because the mean of its divisors is an integer number (66993480).

Almost surely, 2^1144213040 is an apocalyptic number.

1144213040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1144213040 is an abundant number, since it is smaller than the sum of its proper divisors (1535526160).

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

1144213040 is a wasteful number, since it uses less digits than its factorization.

1144213040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104549 (or 104543 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1144213040 is about 33826.2182337902. The cubic root of 1144213040 is about 1045.9292239218.

Adding to 1144213040 its reverse (403124411), we get a palindrome (1547337451).

The spelling of 1144213040 in words is "one billion, one hundred forty-four million, two hundred thirteen thousand, forty".