2115342421 has 8 divisors (see below), whose sum is σ = 2132532000. Its totient is φ = 2098193040.

The previous prime is 2115342391. The next prime is 2115342433. The reversal of 2115342421 is 1242435112.

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

It is a cyclic number.

It is not a de Polignac number, because 2115342421 - 2¹³ = 2115334229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115342461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100506 + ... + 119716.

It is an arithmetic number, because the mean of its divisors is an integer number (266566500).

Almost surely, 2^2115342421 is an apocalyptic number.

It is an amenable number.

2115342421 is a deficient number, since it is larger than the sum of its proper divisors (17189579).

2115342421 is a wasteful number, since it uses less digits than its factorization.

2115342421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20099.

The product of its digits is 1920, while the sum is 25.

The square root of 2115342421 is about 45992.8518467816. The cubic root of 2115342421 is about 1283.6902016620.

Adding to 2115342421 its reverse (1242435112), we get a palindrome (3357777533).

The spelling of 2115342421 in words is "two billion, one hundred fifteen million, three hundred forty-two thousand, four hundred twenty-one".