1421455 has 16 divisors (see below), whose sum is σ = 2064960. Its totient is φ = 916992.

The previous prime is 1421449. The next prime is 1421461. The reversal of 1421455 is 5541241.

It is an interprime number because it is at equal distance from previous prime (1421449) and next prime (1421461).

It is a cyclic number.

It is not a de Polignac number, because 1421455 - 2¹⁵ = 1388687 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 600 + ... + 1789.

It is an arithmetic number, because the mean of its divisors is an integer number (129060).

2^1421455 is an apocalyptic number.

1421455 is a deficient number, since it is larger than the sum of its proper divisors (643505).

1421455 is a wasteful number, since it uses less digits than its factorization.

1421455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418.

The product of its digits is 800, while the sum is 22.

The square root of 1421455 is about 1192.2478769115. The cubic root of 1421455 is about 112.4374631857.

Adding to 1421455 its reverse (5541241), we get a palindrome (6962696).

The spelling of 1421455 in words is "one million, four hundred twenty-one thousand, four hundred fifty-five".