1420311 has 8 divisors (see below), whose sum is σ = 1901824. Its totient is φ = 942840.

The previous prime is 1420303. The next prime is 1420357. The reversal of 1420311 is 1130241.

It is a happy number.

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

It is not a de Polignac number, because 1420311 - 2³ = 1420303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420301) 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, 61 + ... + 1686.

It is an arithmetic number, because the mean of its divisors is an integer number (237728).

2^1420311 is an apocalyptic number.

1420311 is a deficient number, since it is larger than the sum of its proper divisors (481513).

1420311 is a wasteful number, since it uses less digits than its factorization.

1420311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1420311 is about 1191.7680143384. The cubic root of 1420311 is about 112.4072915235.

Adding to 1420311 its reverse (1130241), we get a palindrome (2550552).

The spelling of 1420311 in words is "one million, four hundred twenty thousand, three hundred eleven".