40140045 has 48 divisors (see below), whose sum is σ = 76894272. Its totient is φ = 19207680.

The previous prime is 40140019. The next prime is 40140047. The reversal of 40140045 is 54004104.

40140045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40140045 - 2⁷ = 40139917 is a prime.

It is a super-2 number, since 2×40140045² = 3222446425204050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40140047) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 40597 + ... + 41573.

It is an arithmetic number, because the mean of its divisors is an integer number (1601964).

Almost surely, 2^40140045 is an apocalyptic number.

40140045 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40140045 is a deficient number, since it is larger than the sum of its proper divisors (36754227).

40140045 is a wasteful number, since it uses less digits than its factorization.

40140045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082 (or 1079 counting only the distinct ones).

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

The square root of 40140045 is about 6335.6171759348. The cubic root of 40140045 is about 342.3938470822.

Adding to 40140045 its reverse (54004104), we get a palindrome (94144149).

The spelling of 40140045 in words is "forty million, one hundred forty thousand, forty-five".