1423081 has 12 divisors (see below), whose sum is σ = 1649200. Its totient is φ = 1223640.

The previous prime is 1423073. The next prime is 1423091. The reversal of 1423081 is 1803241.

It is not a de Polignac number, because 1423081 - 2³ = 1423073 is a prime.

It is a super-2 number, since 2×1423081² = 4050319065122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (1423061) 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 11 ways as a sum of consecutive naturals, for example, 1990 + ... + 2608.

2^1423081 is an apocalyptic number.

1423081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1423081 is a deficient number, since it is larger than the sum of its proper divisors (226119).

1423081 is a wasteful number, since it uses less digits than its factorization.

1423081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1423081 is about 1192.9295871928. The cubic root of 1423081 is about 112.4803191910.

It can be divided in two parts, 142 and 3081, that added together give a palindrome (3223).

The spelling of 1423081 in words is "one million, four hundred twenty-three thousand, eighty-one".