1401401 has 2 divisors, whose sum is σ = 1401402.
Its totient is φ = 1401400.
The previous prime is 1401377. The next prime is 1401403. The reversal of 1401401 is 1041041.
Adding to 1401401 its reverse (1041041), we get a palindrome (2442442).
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 1207801 + 193600 = 1099^2 + 440^2
It is an emirp because it is prime and its reverse (1041041) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 1401401 - 214 = 1385017 is a prime.
Together with 1401403, it forms a pair of twin primes.
It is a Chen prime.
It is an Ulam number.
It is not a weakly prime, because it can be changed into another prime (1401403) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700700 + 700701.
It is an arithmetic number, because the mean of its divisors is an integer number (700701).
21401401 is an apocalyptic number.
It is an amenable number.
1401401 is a deficient number, since it is larger than the sum of its proper divisors (1).
1401401 is an equidigital number, since it uses as much as digits as its factorization.
1401401 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 16, while the sum is 11.
The square root of 1401401 is about 1183.8078391361.
The cubic root of 1401401 is about 111.9061980343.
The spelling of 1401401 in words is "one million, four hundred one thousand, four hundred one".