1842401 has 4 divisors (see below), whose sum is σ = 2009904. Its totient is φ = 1674900.

The previous prime is 1842391. The next prime is 1842413. The reversal of 1842401 is 1042481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1042481 = 11 ⋅94771.

It is a cyclic number.

It is not a de Polignac number, because 1842401 - 2¹⁰ = 1841377 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1842431) 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, 83735 + ... + 83756.

It is an arithmetic number, because the mean of its divisors is an integer number (502476).

2^1842401 is an apocalyptic number.

1842401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1842401 is a deficient number, since it is larger than the sum of its proper divisors (167503).

1842401 is a wasteful number, since it uses less digits than its factorization.

1842401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167502.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1842401 is about 1357.3507284413. The cubic root of 1842401 is about 122.5917901514.

Adding to 1842401 its reverse (1042481), we get a palindrome (2884882).

The spelling of 1842401 in words is "one million, eight hundred forty-two thousand, four hundred one".