1429221 has 4 divisors (see below), whose sum is σ = 1905632. Its totient is φ = 952812.

The previous prime is 1429201. The next prime is 1429231. The reversal of 1429221 is 1229241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1429221 - 2⁷ = 1429093 is a prime.

It is a D-number.

It is the 1196-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1429201) by changing a digit.

It is a nontrivial repunit in base 1195.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238201 + ... + 238206.

It is an arithmetic number, because the mean of its divisors is an integer number (476408).

2^1429221 is an apocalyptic number.

It is an amenable number.

1429221 is a deficient number, since it is larger than the sum of its proper divisors (476411).

1429221 is an equidigital number, since it uses as much as digits as its factorization.

1429221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476410.

The product of its digits is 288, while the sum is 21.

The square root of 1429221 is about 1195.5003136762. The cubic root of 1429221 is about 112.6418556215.

The spelling of 1429221 in words is "one million, four hundred twenty-nine thousand, two hundred twenty-one".