1421429 has 8 divisors (see below), whose sum is σ = 1497048. Its totient is φ = 1347840.

The previous prime is 1421417. The next prime is 1421437. The reversal of 1421429 is 9241241.

It can be written as a sum of positive squares in 4 ways, for example, as 5329 + 1416100 = 73^2 + 1190^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421449) 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 7 ways as a sum of consecutive naturals, for example, 1049 + ... + 1985.

It is an arithmetic number, because the mean of its divisors is an integer number (187131).

2^1421429 is an apocalyptic number.

It is an amenable number.

1421429 is a deficient number, since it is larger than the sum of its proper divisors (75619).

1421429 is an equidigital number, since it uses as much as digits as its factorization.

1421429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015.

The product of its digits is 576, while the sum is 23.

The square root of 1421429 is about 1192.2369730888. The cubic root of 1421429 is about 112.4367776459.

The spelling of 1421429 in words is "one million, four hundred twenty-one thousand, four hundred twenty-nine".