1453321140 has 24 divisors (see below), whose sum is σ = 4069299360. Its totient is φ = 387552288.

The previous prime is 1453321127. The next prime is 1453321159. The reversal of 1453321140 is 411233541.

It is a happy number.

It is a super-2 number, since 2×1453321140² = 4224284671941799200, 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 1453321140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12110950 + ... + 12111069.

It is an arithmetic number, because the mean of its divisors is an integer number (169554140).

Almost surely, 2^1453321140 is an apocalyptic number.

1453321140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1453321140 is an abundant number, since it is smaller than the sum of its proper divisors (2615978220).

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

1453321140 is a wasteful number, since it uses less digits than its factorization.

1453321140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24222031 (or 24222029 counting only the distinct ones).

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

The square root of 1453321140 is about 38122.4492917231. The cubic root of 1453321140 is about 1132.7146833139.

Adding to 1453321140 its reverse (411233541), we get a palindrome (1864554681).

The spelling of 1453321140 in words is "one billion, four hundred fifty-three million, three hundred twenty-one thousand, one hundred forty".