2143156 has 12 divisors (see below), whose sum is σ = 3971268. Its totient is φ = 1008512.

The previous prime is 2143147. The next prime is 2143157. The reversal of 2143156 is 6513412.

It can be written as a sum of positive squares in 2 ways, for example, as 933156 + 1210000 = 966^2 + 1100^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143157) 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, 15691 + ... + 15826.

It is an arithmetic number, because the mean of its divisors is an integer number (330939).

2^2143156 is an apocalyptic number.

It is an amenable number.

2143156 is a deficient number, since it is larger than the sum of its proper divisors (1828112).

2143156 is a wasteful number, since it uses less digits than its factorization.

2143156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31538 (or 31536 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 2143156 is about 1463.9521850115. The cubic root of 2143156 is about 128.9291921566.

Adding to 2143156 its reverse (6513412), we get a palindrome (8656568).

The spelling of 2143156 in words is "two million, one hundred forty-three thousand, one hundred fifty-six".