2042401 has 2 divisors, whose sum is σ = 2042402. Its totient is φ = 2042400.

The previous prime is 2042399. The next prime is 2042419. The reversal of 2042401 is 1042402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1040400 + 1002001 = 1020^2 + 1001^2 .

It is a cyclic number.

It is not a de Polignac number, because 2042401 - 2¹ = 2042399 is a prime.

Together with 2042399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2043401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021200 + 1021201.

It is an arithmetic number, because the mean of its divisors is an integer number (1021201).

2^2042401 is an apocalyptic number.

It is an amenable number.

2042401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2042401 is an equidigital number, since it uses as much as digits as its factorization.

2042401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 2042401 is about 1429.1259566602. The cubic root of 2042401 is about 126.8762512111.

Adding to 2042401 its reverse (1042402), we get a palindrome (3084803).

Subtracting from 2042401 its reverse (1042402), we obtain a palindrome (999999).

The spelling of 2042401 in words is "two million, forty-two thousand, four hundred one".