2140942 has 4 divisors (see below), whose sum is σ = 3211416. Its totient is φ = 1070470.

The previous prime is 2140937. The next prime is 2140967. The reversal of 2140942 is 2490412.

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

It is a super-4 number, since 4×2140942⁴ (a number of 26 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535234 + ... + 535237.

It is an arithmetic number, because the mean of its divisors is an integer number (802854).

2^2140942 is an apocalyptic number.

2140942 is a deficient number, since it is larger than the sum of its proper divisors (1070474).

2140942 is a wasteful number, since it uses less digits than its factorization.

2140942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070473.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2140942 is about 1463.1958173806. The cubic root of 2140942 is about 128.8847798377.

The spelling of 2140942 in words is "two million, one hundred forty thousand, nine hundred forty-two".