12125740 has 24 divisors (see below), whose sum is σ = 27779472. Its totient is φ = 4409280.

The previous prime is 12125731. The next prime is 12125759. The reversal of 12125740 is 4752121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 27339 + ... + 27778.

It is an arithmetic number, because the mean of its divisors is an integer number (1157478).

Almost surely, 2^12125740 is an apocalyptic number.

12125740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12125740 is an abundant number, since it is smaller than the sum of its proper divisors (15653732).

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

12125740 is a wasteful number, since it uses less digits than its factorization.

12125740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55137 (or 55135 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 12125740 is about 3482.2033254823. The cubic root of 12125740 is about 229.7397181629.

Adding to 12125740 its reverse (4752121), we get a palindrome (16877861).

The spelling of 12125740 in words is "twelve million, one hundred twenty-five thousand, seven hundred forty".