2121342 has 8 divisors (see below), whose sum is σ = 4242696. Its totient is φ = 707112.

The previous prime is 2121341. The next prime is 2121367. The reversal of 2121342 is 2431212.

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

2121342 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176773 + ... + 176784.

It is an arithmetic number, because the mean of its divisors is an integer number (530337).

2^2121342 is an apocalyptic number.

2121342 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.

2121342 is a wasteful number, since it uses less digits than its factorization.

2121342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353562.

The product of its digits is 96, while the sum is 15.

The square root of 2121342 is about 1456.4827496404. The cubic root of 2121342 is about 128.4902665895.

Adding to 2121342 its reverse (2431212), we get a palindrome (4552554).

The spelling of 2121342 in words is "two million, one hundred twenty-one thousand, three hundred forty-two".