1405133144 has 32 divisors (see below), whose sum is σ = 2820312000. Its totient is φ = 654304032.

The previous prime is 1405133141. The next prime is 1405133159. The reversal of 1405133144 is 4413315041.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405133141) 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, 69374 + ... + 87309.

It is an arithmetic number, because the mean of its divisors is an integer number (88134750).

Almost surely, 2^1405133144 is an apocalyptic number.

It is an amenable number.

1405133144 is an abundant number, since it is smaller than the sum of its proper divisors (1415178856).

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

1405133144 is a wasteful number, since it uses less digits than its factorization.

1405133144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156767 (or 156763 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1405133144 is about 37485.1056287694. The cubic root of 1405133144 is about 1120.0545105272.

Adding to 1405133144 its reverse (4413315041), we get a palindrome (5818448185).

The spelling of 1405133144 in words is "one billion, four hundred five million, one hundred thirty-three thousand, one hundred forty-four".