140004 has 18 divisors (see below), whose sum is σ = 353990. Its totient is φ = 46656.

The previous prime is 139999. The next prime is 140009. The reversal of 140004 is 400041.

It is an interprime number because it is at equal distance from previous prime (139999) and next prime (140009).

It can be written as a sum of positive squares in only one way, i.e., 129600 + 10404 = 360^2 + 102^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×140004² = 39202240032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (140009) by changing a digit.

140004 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 5 ways as a sum of consecutive naturals, for example, 1909 + ... + 1980.

2¹⁴⁰⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

140004 is an abundant number, since it is smaller than the sum of its proper divisors (213986).

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

140004 is a wasteful number, since it uses less digits than its factorization.

140004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3899 (or 3894 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 140004 is about 374.1710838641. The cubic root of 140004 is about 51.9254355370.

Adding to 140004 its reverse (400041), we get a palindrome (540045).

The spelling of 140004 in words is "one hundred forty thousand, four", and thus it is an iban number.