2121042 has 32 divisors (see below), whose sum is σ = 5289984. Its totient is φ = 550800.

The previous prime is 2121029. The next prime is 2121043. The reversal of 2121042 is 2401212.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2121043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1834 + ... + 2757.

It is an arithmetic number, because the mean of its divisors is an integer number (165312).

2^2121042 is an apocalyptic number.

2121042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2121042 is an abundant number, since it is smaller than the sum of its proper divisors (3168942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121042 is a wasteful number, since it uses less digits than its factorization.

2121042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4614.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2121042 is about 1456.3797581675. The cubic root of 2121042 is about 128.4842092766.

Adding to 2121042 its reverse (2401212), we get a palindrome (4522254).

The spelling of 2121042 in words is "two million, one hundred twenty-one thousand, forty-two".