40121270 has 16 divisors (see below), whose sum is σ = 82535328. Its totient is φ = 13755840.

The previous prime is 40121261. The next prime is 40121303. The reversal of 40121270 is 7212104.

40121270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 286511 + ... + 286650.

It is an arithmetic number, because the mean of its divisors is an integer number (5158458).

Almost surely, 2^40121270 is an apocalyptic number.

40121270 is an abundant number, since it is smaller than the sum of its proper divisors (42414058).

40121270 is a wasteful number, since it uses less digits than its factorization.

40121270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573175.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 40121270 is about 6334.1353001021. The cubic root of 40121270 is about 342.3404552885.

Adding to 40121270 its reverse (7212104), we get a palindrome (47333374).

The spelling of 40121270 in words is "forty million, one hundred twenty-one thousand, two hundred seventy".