1440425133 has 32 divisors (see below), whose sum is σ = 2504741120. Its totient is φ = 800850240.

The previous prime is 1440425069. The next prime is 1440425153. The reversal of 1440425133 is 3315240441.

It is a happy number.

1440425133 is a `hidden beast` number, since 1 + 4 + 404 + 251 + 3 + 3 = 666.

It is not a de Polignac number, because 1440425133 - 2⁶ = 1440425069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1440425097 and 1440425106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440425153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95998 + ... + 109983.

It is an arithmetic number, because the mean of its divisors is an integer number (78273160).

Almost surely, 2^1440425133 is an apocalyptic number.

It is an amenable number.

1440425133 is a deficient number, since it is larger than the sum of its proper divisors (1064315987).

1440425133 is a wasteful number, since it uses less digits than its factorization.

1440425133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206034 (or 206028 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1440425133 is about 37952.9331277571. The cubic root of 1440425133 is about 1129.3543530200.

Adding to 1440425133 its reverse (3315240441), we get a palindrome (4755665574).

The spelling of 1440425133 in words is "one billion, four hundred forty million, four hundred twenty-five thousand, one hundred thirty-three".