140004145 has 8 divisors (see below), whose sum is σ = 170306856. Its totient is φ = 110468736.

The previous prime is 140004143. The next prime is 140004169. The reversal of 140004145 is 541400041.

It can be written as a sum of positive squares in 4 ways, for example, as 7921 + 139996224 = 89^2 + 11832^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140004145 - 2¹ = 140004143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140004143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191422 + ... + 192151.

It is an arithmetic number, because the mean of its divisors is an integer number (21288357).

Almost surely, 2^140004145 is an apocalyptic number.

It is an amenable number.

140004145 is a deficient number, since it is larger than the sum of its proper divisors (30302711).

140004145 is an equidigital number, since it uses as much as digits as its factorization.

140004145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383651.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 140004145 is about 11832.3347231221. The cubic root of 140004145 is about 519.2545346317.

Adding to 140004145 its reverse (541400041), we get a palindrome (681404186).

It can be divided in two parts, 14000 and 4145, that added together give a triangular number (18145 = T₁₉₀).

The spelling of 140004145 in words is "one hundred forty million, four thousand, one hundred forty-five".