1421523 has 32 divisors (see below), whose sum is σ = 2361600. Its totient is φ = 839808.

The previous prime is 1421521. The next prime is 1421527. The reversal of 1421523 is 3251241.

1421523 is a `hidden beast` number, since 142 + 1 + 523 = 666.

It is not a de Polignac number, because 1421523 - 2¹ = 1421521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1421496 and 1421505.

It is not an unprimeable number, because it can be changed into a prime (1421521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8640 + ... + 8802.

It is an arithmetic number, because the mean of its divisors is an integer number (73800).

2^1421523 is an apocalyptic number.

1421523 is a deficient number, since it is larger than the sum of its proper divisors (940077).

1421523 is a wasteful number, since it uses less digits than its factorization.

1421523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 202 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 1421523 is about 1192.2763941302. The cubic root of 1421523 is about 112.4392560964.

Adding to 1421523 its reverse (3251241), we get a palindrome (4672764).

The spelling of 1421523 in words is "one million, four hundred twenty-one thousand, five hundred twenty-three".