40140255 has 32 divisors (see below), whose sum is σ = 68198400. Its totient is φ = 20103552.

The previous prime is 40140253. The next prime is 40140259. The reversal of 40140255 is 55204104.

40140255 = 498² + 499² + ... + 624².

It is not a de Polignac number, because 40140255 - 2¹ = 40140253 is a prime.

It is a super-2 number, since 2×40140255² = 3222480142930050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40140251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35641 + ... + 36749.

It is an arithmetic number, because the mean of its divisors is an integer number (2131200).

Almost surely, 2^40140255 is an apocalyptic number.

40140255 is a deficient number, since it is larger than the sum of its proper divisors (28058145).

40140255 is a wasteful number, since it uses less digits than its factorization.

40140255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 40140255 is about 6335.6337488842. The cubic root of 40140255 is about 342.3944441799.

Adding to 40140255 its reverse (55204104), we get a palindrome (95344359).

The spelling of 40140255 in words is "forty million, one hundred forty thousand, two hundred fifty-five".