1442891 has 4 divisors (see below), whose sum is σ = 1445784. Its totient is φ = 1440000.

The previous prime is 1442887. The next prime is 1442899. The reversal of 1442891 is 1982441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1442891 - 2² = 1442887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1442899) 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, 485 + ... + 1766.

It is an arithmetic number, because the mean of its divisors is an integer number (361446).

2^1442891 is an apocalyptic number.

1442891 is a deficient number, since it is larger than the sum of its proper divisors (2893).

1442891 is an equidigital number, since it uses as much as digits as its factorization.

1442891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2892.

The product of its digits is 2304, while the sum is 29.

The square root of 1442891 is about 1201.2039793474. The cubic root of 1442891 is about 112.9998433704. Note that the first 3 decimals are identical.

The spelling of 1442891 in words is "one million, four hundred forty-two thousand, eight hundred ninety-one".