2120438 has 16 divisors (see below), whose sum is σ = 3432240. Its totient is φ = 979200.

The previous prime is 2120429. The next prime is 2120453. The reversal of 2120438 is 8340212.

2120438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 878 + ... + 2238.

It is an arithmetic number, because the mean of its divisors is an integer number (214515).

2^2120438 is an apocalyptic number.

2120438 is a deficient number, since it is larger than the sum of its proper divisors (1311802).

2120438 is a wasteful number, since it uses less digits than its factorization.

2120438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2120438 is about 1456.1723799056. The cubic root of 2120438 is about 128.4720121536.

The spelling of 2120438 in words is "two million, one hundred twenty thousand, four hundred thirty-eight".