12042146 has 4 divisors (see below), whose sum is σ = 18063222. Its totient is φ = 6021072.

The previous prime is 12042127. The next prime is 12042157. The reversal of 12042146 is 64124021.

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

It can be written as a sum of positive squares in only one way, i.e., 9517225 + 2524921 = 3085^2 + 1589^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3010535 + ... + 3010538.

Almost surely, 2^12042146 is an apocalyptic number.

12042146 is a deficient number, since it is larger than the sum of its proper divisors (6021076).

12042146 is an equidigital number, since it uses as much as digits as its factorization.

12042146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6021075.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 12042146 is about 3470.1795342604. The cubic root of 12042146 is about 229.2105638150.

Adding to 12042146 its reverse (64124021), we get a palindrome (76166167).

The spelling of 12042146 in words is "twelve million, forty-two thousand, one hundred forty-six".