1420897 has 4 divisors (see below), whose sum is σ = 1445040. Its totient is φ = 1396756.

The previous prime is 1420891. The next prime is 1420901. The reversal of 1420897 is 7980241.

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 a cyclic number.

It is not a de Polignac number, because 1420897 - 2¹¹ = 1418849 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420891) 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 3 ways as a sum of consecutive naturals, for example, 11983 + ... + 12100.

It is an arithmetic number, because the mean of its divisors is an integer number (361260).

2^1420897 is an apocalyptic number.

It is an amenable number.

1420897 is a deficient number, since it is larger than the sum of its proper divisors (24143).

1420897 is an equidigital number, since it uses as much as digits as its factorization.

1420897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24142.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1420897 is about 1192.0138422015. The cubic root of 1420897 is about 112.4227486113.

The spelling of 1420897 in words is "one million, four hundred twenty thousand, eight hundred ninety-seven".