1420867 has 4 divisors (see below), whose sum is σ = 1623856. Its totient is φ = 1217880.

The previous prime is 1420847. The next prime is 1420879. The reversal of 1420867 is 7680241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7680241 = 2099 ⋅3659.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1420867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420807) 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, 101484 + ... + 101497.

It is an arithmetic number, because the mean of its divisors is an integer number (405964).

2^1420867 is an apocalyptic number.

1420867 is a deficient number, since it is larger than the sum of its proper divisors (202989).

1420867 is an equidigital number, since it uses as much as digits as its factorization.

1420867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202988.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1420867 is about 1192.0012583886. The cubic root of 1420867 is about 112.4219573961.

The spelling of 1420867 in words is "one million, four hundred twenty thousand, eight hundred sixty-seven".