2371421 has 4 divisors (see below), whose sum is σ = 2553852. Its totient is φ = 2188992.

The previous prime is 2371361. The next prime is 2371423. The reversal of 2371421 is 1241732.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 151321 + 2220100 = 389^2 + 1490^2 .

It is not a de Polignac number, because 2371421 - 2¹⁴ = 2355037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2371393 and 2371402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2371423) 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, 91196 + ... + 91221.

It is an arithmetic number, because the mean of its divisors is an integer number (638463).

2^2371421 is an apocalyptic number.

It is an amenable number.

2371421 is a deficient number, since it is larger than the sum of its proper divisors (182431).

2371421 is a wasteful number, since it uses less digits than its factorization.

2371421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182430.

The product of its digits is 336, while the sum is 20.

The square root of 2371421 is about 1539.9418820202. The cubic root of 2371421 is about 133.3530297291.

The spelling of 2371421 in words is "two million, three hundred seventy-one thousand, four hundred twenty-one".