1420147 has 4 divisors (see below), whose sum is σ = 1423656. Its totient is φ = 1416640.

The previous prime is 1420123. The next prime is 1420151. The reversal of 1420147 is 7410241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1420147 is a prime.

It is a Duffinian number.

1420147 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1420847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054 + ... + 1987.

It is an arithmetic number, because the mean of its divisors is an integer number (355914).

2^1420147 is an apocalyptic number.

1420147 is a deficient number, since it is larger than the sum of its proper divisors (3509).

1420147 is an equidigital number, since it uses as much as digits as its factorization.

1420147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3508.

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

The square root of 1420147 is about 1191.6992070149. The cubic root of 1420147 is about 112.4029648876.

Adding to 1420147 its reverse (7410241), we get a palindrome (8830388).

The spelling of 1420147 in words is "one million, four hundred twenty thousand, one hundred forty-seven".