2165142 has 16 divisors (see below), whose sum is σ = 4948992. Its totient is φ = 618600.

The previous prime is 2165131. The next prime is 2165143. The reversal of 2165142 is 2415612.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25734 + ... + 25817.

It is an arithmetic number, because the mean of its divisors is an integer number (309312).

2^2165142 is an apocalyptic number.

2165142 is an abundant number, since it is smaller than the sum of its proper divisors (2783850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2165142 is a wasteful number, since it uses less digits than its factorization.

2165142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51563.

The product of its digits is 480, while the sum is 21.

The square root of 2165142 is about 1471.4421497293. The cubic root of 2165142 is about 129.3685751436.

The spelling of 2165142 in words is "two million, one hundred sixty-five thousand, one hundred forty-two".