4012156 has 6 divisors (see below), whose sum is σ = 7021280. Its totient is φ = 2006076.

The previous prime is 4012147. The next prime is 4012157. The reversal of 4012156 is 6512104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4012157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501516 + ... + 501523.

Almost surely, 2^4012156 is an apocalyptic number.

It is an amenable number.

4012156 is a deficient number, since it is larger than the sum of its proper divisors (3009124).

4012156 is a wasteful number, since it uses less digits than its factorization.

4012156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003043 (or 1003041 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 4012156 is about 2003.0366946214. The cubic root of 4012156 is about 158.9007463037.

The spelling of 4012156 in words is "four million, twelve thousand, one hundred fifty-six".