2418421 has 2 divisors, whose sum is σ = 2418422. Its totient is φ = 2418420.

The previous prime is 2418407. The next prime is 2418439. The reversal of 2418421 is 1248142.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1661521 + 756900 = 1289^2 + 870^2 .

It is a cyclic number.

It is not a de Polignac number, because 2418421 - 2⁵ = 2418389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2418392 and 2418401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2418401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1209210 + 1209211.

It is an arithmetic number, because the mean of its divisors is an integer number (1209211).

2^2418421 is an apocalyptic number.

It is an amenable number.

2418421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2418421 is an equidigital number, since it uses as much as digits as its factorization.

2418421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 512, while the sum is 22.

The square root of 2418421 is about 1555.1273259769. The cubic root of 2418421 is about 134.2282624638.

The spelling of 2418421 in words is "two million, four hundred eighteen thousand, four hundred twenty-one".