12145724 has 6 divisors (see below), whose sum is σ = 21255024. Its totient is φ = 6072860.

The previous prime is 12145723. The next prime is 12145733. The reversal of 12145724 is 42754121.

12145724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12145724² = 295037222968352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12145693 and 12145702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12145723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1518212 + ... + 1518219.

It is an arithmetic number, because the mean of its divisors is an integer number (3542504).

Almost surely, 2^12145724 is an apocalyptic number.

It is an amenable number.

12145724 is a deficient number, since it is larger than the sum of its proper divisors (9109300).

12145724 is a wasteful number, since it uses less digits than its factorization.

12145724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036435 (or 3036433 counting only the distinct ones).

The product of its digits is 2240, while the sum is 26.

The square root of 12145724 is about 3485.0715918041. The cubic root of 12145724 is about 229.8658575073.

Adding to 12145724 its reverse (42754121), we get a palindrome (54899845).

The spelling of 12145724 in words is "twelve million, one hundred forty-five thousand, seven hundred twenty-four".