2115143 has 4 divisors (see below), whose sum is σ = 2130720. Its totient is φ = 2099568.

The previous prime is 2115133. The next prime is 2115181. The reversal of 2115143 is 3415112.

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

It is a cyclic number.

It is not a de Polignac number, because 2115143 - 2⁶ = 2115079 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115133) 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, 7583 + ... + 7856.

It is an arithmetic number, because the mean of its divisors is an integer number (532680).

2^2115143 is an apocalyptic number.

2115143 is a deficient number, since it is larger than the sum of its proper divisors (15577).

2115143 is a wasteful number, since it uses less digits than its factorization.

2115143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15576.

The product of its digits is 120, while the sum is 17.

The square root of 2115143 is about 1454.3531208066. The cubic root of 2115143 is about 128.3649861018.

It can be divided in two parts, 21 and 15143, that multiplied together give a triangular number (318003 = T₇₉₇).

The spelling of 2115143 in words is "two million, one hundred fifteen thousand, one hundred forty-three".