12453140 has 24 divisors (see below), whose sum is σ = 29887872. Its totient is φ = 4269600.

The previous prime is 12453131. The next prime is 12453157. The reversal of 12453140 is 4135421.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 44336 + ... + 44615.

It is an arithmetic number, because the mean of its divisors is an integer number (1245328).

Almost surely, 2^12453140 is an apocalyptic number.

12453140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12453140 is an abundant number, since it is smaller than the sum of its proper divisors (17434732).

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

12453140 is a wasteful number, since it uses less digits than its factorization.

12453140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88967 (or 88965 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 12453140 is about 3528.9006786817. The cubic root of 12453140 is about 231.7890720616.

Adding to 12453140 its reverse (4135421), we get a palindrome (16588561).

The spelling of 12453140 in words is "twelve million, four hundred fifty-three thousand, one hundred forty".