12345142 has 4 divisors (see below), whose sum is σ = 18517716. Its totient is φ = 6172570.

The previous prime is 12345127. The next prime is 12345143. The reversal of 12345142 is 24154321.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12345143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3086284 + ... + 3086287.

It is an arithmetic number, because the mean of its divisors is an integer number (4629429).

Almost surely, 2^12345142 is an apocalyptic number.

12345142 is a deficient number, since it is larger than the sum of its proper divisors (6172574).

12345142 is an equidigital number, since it uses as much as digits as its factorization.

12345142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6172573.

The product of its digits is 960, while the sum is 22.

The square root of 12345142 is about 3513.5654256040. The cubic root of 12345142 is about 231.1170736429.

Adding to 12345142 its reverse (24154321), we get a palindrome (36499463).

The spelling of 12345142 in words is "twelve million, three hundred forty-five thousand, one hundred forty-two".