1453123140 has 192 divisors, whose sum is σ = 4830658560. Its totient is φ = 319380480.

The previous prime is 1453123117. The next prime is 1453123159. The reversal of 1453123140 is 413213541.

It is a happy number.

It is a super-2 number, since 2×1453123140² = 4223133720006919200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1453123140.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3033421 + ... + 3033899.

It is an arithmetic number, because the mean of its divisors is an integer number (25159680).

Almost surely, 2^1453123140 is an apocalyptic number.

1453123140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1453123140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2415329280).

1453123140 is an abundant number, since it is smaller than the sum of its proper divisors (3377535420).

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

1453123140 is a wasteful number, since it uses less digits than its factorization.

1453123140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762 (or 760 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1453123140 is about 38119.8523082134. The cubic root of 1453123140 is about 1132.6632407508.

Adding to 1453123140 its reverse (413213541), we get a palindrome (1866336681).

The spelling of 1453123140 in words is "one billion, four hundred fifty-three million, one hundred twenty-three thousand, one hundred forty".