1420387111 has 16 divisors (see below), whose sum is σ = 1766868768. Its totient is φ = 1121817600.

The previous prime is 1420387097. The next prime is 1420387153. The reversal of 1420387111 is 1117830241.

It is a cyclic number.

It is not a de Polignac number, because 1420387111 - 2⁵ = 1420387079 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1420387111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420387211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289710 + ... + 294571.

It is an arithmetic number, because the mean of its divisors is an integer number (110429298).

Almost surely, 2^1420387111 is an apocalyptic number.

1420387111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1420387111 is a deficient number, since it is larger than the sum of its proper divisors (346481657).

1420387111 is a wasteful number, since it uses less digits than its factorization.

1420387111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584322.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 1420387111 is about 37688.0234424678. The cubic root of 1420387111 is about 1124.0929936505.

The spelling of 1420387111 in words is "one billion, four hundred twenty million, three hundred eighty-seven thousand, one hundred eleven".