2121402 has 8 divisors (see below), whose sum is σ = 4242816. Its totient is φ = 707132.

The previous prime is 2121389. The next prime is 2121403. The reversal of 2121402 is 2041212.

2121402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

2121402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2121403) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 176778 + ... + 176789.

It is an arithmetic number, because the mean of its divisors is an integer number (530352).

2^2121402 is an apocalyptic number.

2121402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2121402 is a wasteful number, since it uses less digits than its factorization.

2121402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353572.

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

The square root of 2121402 is about 1456.5033470610. The cubic root of 2121402 is about 128.4914779836.

Adding to 2121402 its reverse (2041212), we get a palindrome (4162614).

The spelling of 2121402 in words is "two million, one hundred twenty-one thousand, four hundred two".