2347421 has 2 divisors, whose sum is σ = 2347422. Its totient is φ = 2347420.

The previous prime is 2347409. The next prime is 2347427. The reversal of 2347421 is 1247432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2292196 + 55225 = 1514^2 + 235^2 .

It is a cyclic number.

It is not a de Polignac number, because 2347421 - 2¹⁰ = 2346397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2347427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1173710 + 1173711.

It is an arithmetic number, because the mean of its divisors is an integer number (1173711).

2^2347421 is an apocalyptic number.

It is an amenable number.

2347421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2347421 is an equidigital number, since it uses as much as digits as its factorization.

2347421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 23.

The square root of 2347421 is about 1532.1295637119. The cubic root of 2347421 is about 132.9016364307.

The spelling of 2347421 in words is "two million, three hundred forty-seven thousand, four hundred twenty-one".