1420671 has 8 divisors (see below), whose sum is σ = 2164864. Its totient is φ = 811800.

The previous prime is 1420667. The next prime is 1420697. The reversal of 1420671 is 1760241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1420671 - 2² = 1420667 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 67651 = 1420671 / (1 + 4 + 2 + 0 + 6 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33805 + ... + 33846.

It is an arithmetic number, because the mean of its divisors is an integer number (270608).

2^1420671 is an apocalyptic number.

1420671 is a deficient number, since it is larger than the sum of its proper divisors (744193).

1420671 is an equidigital number, since it uses as much as digits as its factorization.

1420671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67661.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 1420671 is about 1191.9190408748. The cubic root of 1420671 is about 112.4167878489.

The spelling of 1420671 in words is "one million, four hundred twenty thousand, six hundred seventy-one".