12125842 has 8 divisors (see below), whose sum is σ = 18204300. Its totient is φ = 6057744.

The previous prime is 12125837. The next prime is 12125843. The reversal of 12125842 is 24852121.

It can be written as a sum of positive squares in 2 ways, for example, as 8473921 + 3651921 = 2911^2 + 1911^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12125843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1884 + ... + 5272.

Almost surely, 2^12125842 is an apocalyptic number.

12125842 is a deficient number, since it is larger than the sum of its proper divisors (6078458).

12125842 is a wasteful number, since it uses less digits than its factorization.

12125842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5180.

The product of its digits is 1280, while the sum is 25.

The square root of 12125842 is about 3482.2179713510. The cubic root of 12125842 is about 229.7403623404.

Adding to 12125842 its reverse (24852121), we get a palindrome (36977963).

It can be divided in two parts, 121258 and 42, that multiplied together give a triangular number (5092836 = T₃₁₉₁).

The spelling of 12125842 in words is "twelve million, one hundred twenty-five thousand, eight hundred forty-two".