1421400223 has 4 divisors (see below), whose sum is σ = 1444701928. Its totient is φ = 1398098520.

The previous prime is 1421400181. The next prime is 1421400247. The reversal of 1421400223 is 3220041241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3220041241 = 271 ⋅11882071.

It is a cyclic number.

It is not a de Polignac number, because 1421400223 - 2¹³ = 1421392031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1421400223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421400263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11650761 + ... + 11650882.

It is an arithmetic number, because the mean of its divisors is an integer number (361175482).

Almost surely, 2^1421400223 is an apocalyptic number.

1421400223 is a deficient number, since it is larger than the sum of its proper divisors (23301705).

1421400223 is an equidigital number, since it uses as much as digits as its factorization.

1421400223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23301704.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1421400223 is about 37701.4618151604. The cubic root of 1421400223 is about 1124.3601887545.

Adding to 1421400223 its reverse (3220041241), we get a palindrome (4641441464).

The spelling of 1421400223 in words is "one billion, four hundred twenty-one million, four hundred thousand, two hundred twenty-three".