1423404 has 36 divisors (see below), whose sum is σ = 3789240. Its totient is φ = 449280.

The previous prime is 1423403. The next prime is 1423417. The reversal of 1423404 is 4043241.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×1423404³ = 8651786633349129792, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (1423403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 357 + ... + 1724.

2^1423404 is an apocalyptic number.

It is an amenable number.

1423404 is an abundant number, since it is smaller than the sum of its proper divisors (2365836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1423404 is a wasteful number, since it uses less digits than its factorization.

1423404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110 (or 2105 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1423404 is about 1193.0649605114. The cubic root of 1423404 is about 112.4888285203.

Adding to 1423404 its reverse (4043241), we get a palindrome (5466645).

The spelling of 1423404 in words is "one million, four hundred twenty-three thousand, four hundred four".