2142646 has 24 divisors (see below), whose sum is σ = 3735576. Its totient is φ = 913920.

The previous prime is 2142643. The next prime is 2142659. The reversal of 2142646 is 6462412.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (2304) is a multiple of the sum of its prime factors (384).

It is a self number, because there is not a number n which added to its sum of digits gives 2142646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6190 + ... + 6526.

It is an arithmetic number, because the mean of its divisors is an integer number (155649).

2^2142646 is an apocalyptic number.

2142646 is a deficient number, since it is larger than the sum of its proper divisors (1592930).

2142646 is a wasteful number, since it uses less digits than its factorization.

2142646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 367 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 2142646 is about 1463.7779886308. Note that the first 3 decimals coincide. The cubic root of 2142646 is about 128.9189643890.

The spelling of 2142646 in words is "two million, one hundred forty-two thousand, six hundred forty-six".