140404 has 12 divisors (see below), whose sum is σ = 268128. Its totient is φ = 63800.

The previous prime is 140401. The next prime is 140407. The reversal of 140404 is 404041.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (140401) and next prime (140407).

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1552 + ... + 1639.

It is an arithmetic number, because the mean of its divisors is an integer number (22344).

2¹⁴⁰⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

140404 is a deficient number, since it is larger than the sum of its proper divisors (127724).

140404 is a wasteful number, since it uses less digits than its factorization.

140404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206 (or 3204 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 140404 is about 374.7052174710. The cubic root of 140404 is about 51.9748398993.

Adding to 140404 its reverse (404041), we get a palindrome (544445).

The spelling of 140404 in words is "one hundred forty thousand, four hundred four", and thus it is an iban number.