140004045 has 20 divisors (see below), whose sum is σ = 250970940. Its totient is φ = 74668608.

The previous prime is 140004019. The next prime is 140004047. The reversal of 140004045 is 540400041.

It can be written as a sum of positive squares in 2 ways, for example, as 46049796 + 93954249 = 6786^2 + 9693^2 .

It is not a de Polignac number, because 140004045 - 2¹¹ = 140001997 is a prime.

It is a super-2 number, since 2×140004045² = 39202265232724050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140004047) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 172440 + ... + 173249.

It is an arithmetic number, because the mean of its divisors is an integer number (12548547).

Almost surely, 2^140004045 is an apocalyptic number.

140004045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140004045 is a deficient number, since it is larger than the sum of its proper divisors (110966895).

140004045 is an equidigital number, since it uses as much as digits as its factorization.

140004045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345706 (or 345697 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 140004045 is about 11832.3304974126. The cubic root of 140004045 is about 519.2544110033.

Adding to 140004045 its reverse (540400041), we get a palindrome (680404086).

The spelling of 140004045 in words is "one hundred forty million, four thousand, forty-five".