1421047 has 4 divisors (see below), whose sum is σ = 1504656. Its totient is φ = 1337440.

The previous prime is 1421041. The next prime is 1421083. The reversal of 1421047 is 7401241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7401241 = 19 ⋅389539.

It is a cyclic number.

It is not a de Polignac number, because 1421047 - 2³ = 1421039 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 (1421041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41779 + ... + 41812.

It is an arithmetic number, because the mean of its divisors is an integer number (376164).

2^1421047 is an apocalyptic number.

1421047 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1421047 is a deficient number, since it is larger than the sum of its proper divisors (83609).

1421047 is an equidigital number, since it uses as much as digits as its factorization.

1421047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83608.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 1421047 is about 1192.0767592735. The cubic root of 1421047 is about 112.4267045206.

Adding to 1421047 its reverse (7401241), we get a palindrome (8822288).

The spelling of 1421047 in words is "one million, four hundred twenty-one thousand, forty-seven".