1404143240 has 32 divisors (see below), whose sum is σ = 3161885760. Its totient is φ = 561201600.

The previous prime is 1404143227. The next prime is 1404143267. The reversal of 1404143240 is 423414041.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 38045 + ... + 65235.

It is an arithmetic number, because the mean of its divisors is an integer number (98808930).

Almost surely, 2^1404143240 is an apocalyptic number.

1404143240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1404143240 is an abundant number, since it is smaller than the sum of its proper divisors (1757742520).

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

1404143240 is a wasteful number, since it uses less digits than its factorization.

1404143240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28493 (or 28489 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1404143240 is about 37471.8993380373. The cubic root of 1404143240 is about 1119.7914258712.

Adding to 1404143240 its reverse (423414041), we get a palindrome (1827557281).

The spelling of 1404143240 in words is "one billion, four hundred four million, one hundred forty-three thousand, two hundred forty".