2123942 has 8 divisors (see below), whose sum is σ = 3260136. Its totient is φ = 1037232.

The previous prime is 2123939. The next prime is 2123969. The reversal of 2123942 is 2493212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2123942² = 9022259238728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12263 + ... + 12434.

It is an arithmetic number, because the mean of its divisors is an integer number (407517).

2^2123942 is an apocalyptic number.

2123942 is a deficient number, since it is larger than the sum of its proper divisors (1136194).

2123942 is a wasteful number, since it uses less digits than its factorization.

2123942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24742.

The product of its digits is 864, while the sum is 23.

The square root of 2123942 is about 1457.3750375247. The cubic root of 2123942 is about 128.5427393954.

The spelling of 2123942 in words is "two million, one hundred twenty-three thousand, nine hundred forty-two".