12434140 has 24 divisors (see below), whose sum is σ = 27648432. Its totient is φ = 4680960.

The previous prime is 12434137. The next prime is 12434143. The reversal of 12434140 is 4143421.

It is an interprime number because it is at equal distance from previous prime (12434137) and next prime (12434143).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12434143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17946 + ... + 18625.

It is an arithmetic number, because the mean of its divisors is an integer number (1152018).

Almost surely, 2^12434140 is an apocalyptic number.

12434140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12434140 is an abundant number, since it is smaller than the sum of its proper divisors (15214292).

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

12434140 is a wasteful number, since it uses less digits than its factorization.

12434140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36597 (or 36595 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 12434140 is about 3526.2075945696. The cubic root of 12434140 is about 231.6711303478.

Adding to 12434140 its reverse (4143421), we get a palindrome (16577561).

The spelling of 12434140 in words is "twelve million, four hundred thirty-four thousand, one hundred forty".