2129942 has 16 divisors (see below), whose sum is σ = 3324240. Its totient is φ = 1022688.

The previous prime is 2129903. The next prime is 2129951. The reversal of 2129942 is 2499212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7784 + ... + 8052.

It is an arithmetic number, because the mean of its divisors is an integer number (207765).

2^2129942 is an apocalyptic number.

2129942 is a deficient number, since it is larger than the sum of its proper divisors (1194298).

2129942 is a wasteful number, since it uses less digits than its factorization.

2129942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415.

The product of its digits is 2592, while the sum is 29.

The square root of 2129942 is about 1459.4320813248. The cubic root of 2129942 is about 128.6636672619.

The spelling of 2129942 in words is "two million, one hundred twenty-nine thousand, nine hundred forty-two".