1420881 has 16 divisors (see below), whose sum is σ = 2362368. Its totient is φ = 738000.

The previous prime is 1420879. The next prime is 1420883. The reversal of 1420881 is 1880241.

It is an interprime number because it is at equal distance from previous prime (1420879) and next prime (1420883).

It is not a de Polignac number, because 1420881 - 2¹ = 1420879 is a prime.

It is a super-2 number, since 2×1420881² = 4037805632322, which contains 22 as substring.

It is a Curzon number.

1420881 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420883) 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 15 ways as a sum of consecutive naturals, for example, 2845 + ... + 3306.

It is an arithmetic number, because the mean of its divisors is an integer number (147648).

2^1420881 is an apocalyptic number.

1420881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1420881 is a deficient number, since it is larger than the sum of its proper divisors (941487).

1420881 is a wasteful number, since it uses less digits than its factorization.

1420881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6172.

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 1420881 is about 1192.0071308512. The cubic root of 1420881 is about 112.4223266312.

The spelling of 1420881 in words is "one million, four hundred twenty thousand, eight hundred eighty-one".