1420001 has 8 divisors (see below), whose sum is σ = 1560384. Its totient is φ = 1281520.

The previous prime is 1419973. The next prime is 1420009. The reversal of 1420001 is 1000241.

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

It is a cyclic number.

It is not a de Polignac number, because 1420001 - 2¹⁴ = 1403617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420009) 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 7 ways as a sum of consecutive naturals, for example, 1451 + ... + 2223.

It is an arithmetic number, because the mean of its divisors is an integer number (195048).

2^1420001 is an apocalyptic number.

1420001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1420001 is a deficient number, since it is larger than the sum of its proper divisors (140383).

1420001 is a wasteful number, since it uses less digits than its factorization.

1420001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 1420001 is about 1191.6379483719. The cubic root of 1420001 is about 112.3991128462.

Adding to 1420001 its reverse (1000241), we get a palindrome (2420242).

The spelling of 1420001 in words is "one million, four hundred twenty thousand, one".