1401823 has 2 divisors, whose sum is σ = 1401824. Its totient is φ = 1401822.

The previous prime is 1401821. The next prime is 1401857. The reversal of 1401823 is 3281041.

It is a weak prime.

It is an emirp because it is prime and its reverse (3281041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1401823 - 2¹ = 1401821 is a prime.

Together with 1401821, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1401823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700911 + 700912.

It is an arithmetic number, because the mean of its divisors is an integer number (700912).

2^1401823 is an apocalyptic number.

1401823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401823 is an equidigital number, since it uses as much as digits as its factorization.

1401823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1401823 is about 1183.9860641072. The cubic root of 1401823 is about 111.9174295747.

Adding to 1401823 its reverse (3281041), we get a palindrome (4682864).

It can be divided in two parts, 140182 and 3, that added together give a triangular number (140185 = T₅₂₉).

The spelling of 1401823 in words is "one million, four hundred one thousand, eight hundred twenty-three".