1420111 has 8 divisors (see below), whose sum is σ = 1770624. Its totient is φ = 1106520.

The previous prime is 1420109. The next prime is 1420121. The reversal of 1420111 is 1110241.

1420111 = 484² + 485² + ... + 489².

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 1420111 - 2¹ = 1420109 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420121) 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 7 ways as a sum of consecutive naturals, for example, 9145 + ... + 9298.

It is an arithmetic number, because the mean of its divisors is an integer number (221328).

2^1420111 is an apocalyptic number.

1420111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1420111 is a deficient number, since it is larger than the sum of its proper divisors (350513).

1420111 is a wasteful number, since it uses less digits than its factorization.

1420111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18461.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1420111 is about 1191.6841024365. The cubic root of 1420111 is about 112.4020150937.

Adding to 1420111 its reverse (1110241), we get a palindrome (2530352).

The spelling of 1420111 in words is "one million, four hundred twenty thousand, one hundred eleven".