1440133123 has 16 divisors (see below), whose sum is σ = 1715093856. Its totient is φ = 1191939840.

The previous prime is 1440133111. The next prime is 1440133147. The reversal of 1440133123 is 3213310441.

It is a de Polignac number, because none of the positive numbers 2^k-1440133123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1440133094 and 1440133103.

It is not an unprimeable number, because it can be changed into a prime (1440133103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58540 + ... + 79417.

It is an arithmetic number, because the mean of its divisors is an integer number (107193366).

Almost surely, 2^1440133123 is an apocalyptic number.

1440133123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1440133123 is a deficient number, since it is larger than the sum of its proper divisors (274960733).

1440133123 is a wasteful number, since it uses less digits than its factorization.

1440133123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138054.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1440133123 is about 37949.0859310208. The cubic root of 1440133123 is about 1129.2780317903.

Adding to 1440133123 its reverse (3213310441), we get a palindrome (4653443564).

It can be divided in two parts, 14401 and 33123, that added together give a square (47524 = 218²).

The spelling of 1440133123 in words is "one billion, four hundred forty million, one hundred thirty-three thousand, one hundred twenty-three".