1421801 has 2 divisors, whose sum is σ = 1421802. Its totient is φ = 1421800.

The previous prime is 1421779. The next prime is 1421813. The reversal of 1421801 is 1081241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 952576 + 469225 = 976^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421801 - 2⁶ = 1421737 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1421801.

It is not a weakly prime, because it can be changed into another prime (1421401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710900 + 710901.

It is an arithmetic number, because the mean of its divisors is an integer number (710901).

2^1421801 is an apocalyptic number.

It is an amenable number.

1421801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421801 is an equidigital number, since it uses as much as digits as its factorization.

1421801 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 17.

The square root of 1421801 is about 1192.3929721363. The cubic root of 1421801 is about 112.4465853425.

It can be divided in two parts, 1421 and 801, that added together give a palindrome (2222).

The spelling of 1421801 in words is "one million, four hundred twenty-one thousand, eight hundred one".