1426404 has 24 divisors (see below), whose sum is σ = 3803968. Its totient is φ = 407520.

The previous prime is 1426393. The next prime is 1426427. The reversal of 1426404 is 4046241.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8407 + ... + 8574.

2^1426404 is an apocalyptic number.

1426404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1426404 is an abundant number, since it is smaller than the sum of its proper divisors (2377564).

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

1426404 is a wasteful number, since it uses less digits than its factorization.

1426404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16995 (or 16993 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1426404 is about 1194.3215647387. The cubic root of 1426404 is about 112.5678011050.

Subtracting from 1426404 its product of nonzero digits (768), we obtain a square (1425636 = 1194²).

It can be divided in two parts, 1426 and 404, that added together give a triangular number (1830 = T₆₀).

The spelling of 1426404 in words is "one million, four hundred twenty-six thousand, four hundred four".