1404042321 has 32 divisors (see below), whose sum is σ = 2096404992. Its totient is φ = 828495360.

The previous prime is 1404042317. The next prime is 1404042323. The reversal of 1404042321 is 1232404041.

It is not a de Polignac number, because 1404042321 - 2² = 1404042317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1404042323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 499506 + ... + 502308.

It is an arithmetic number, because the mean of its divisors is an integer number (65512656).

Almost surely, 2^1404042321 is an apocalyptic number.

1404042321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1404042321 is a deficient number, since it is larger than the sum of its proper divisors (692362671).

1404042321 is a wasteful number, since it uses less digits than its factorization.

1404042321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213.

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

The square root of 1404042321 is about 37470.5527181012. The cubic root of 1404042321 is about 1119.7645979011.

Adding to 1404042321 its reverse (1232404041), we get a palindrome (2636446362).

The spelling of 1404042321 in words is "one billion, four hundred four million, forty-two thousand, three hundred twenty-one".