1234404140 has 24 divisors (see below), whose sum is σ = 2681637840. Its totient is φ = 476735168.

The previous prime is 1234404131. The next prime is 1234404163. The reversal of 1234404140 is 414044321.

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, 1063562 + ... + 1064721.

It is an arithmetic number, because the mean of its divisors is an integer number (111734910).

Almost surely, 2^1234404140 is an apocalyptic number.

1234404140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1234404140 is an abundant number, since it is smaller than the sum of its proper divisors (1447233700).

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

1234404140 is a wasteful number, since it uses less digits than its factorization.

1234404140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128321 (or 2128319 counting only the distinct ones).

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

The square root of 1234404140 is about 35134.0880058100. The cubic root of 1234404140 is about 1072.7185478776.

Adding to 1234404140 its reverse (414044321), we get a palindrome (1648448461).

The spelling of 1234404140 in words is "one billion, two hundred thirty-four million, four hundred four thousand, one hundred forty".