40715121 has 16 divisors (see below), whose sum is σ = 56964608. Its totient is φ = 25833600.

The previous prime is 40715089. The next prime is 40715137. The reversal of 40715121 is 12151704.

It is a happy number.

40715121 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 40715121 - 2⁵ = 40715089 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40715321) 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 15 ways as a sum of consecutive naturals, for example, 2085 + ... + 9261.

It is an arithmetic number, because the mean of its divisors is an integer number (3560288).

Almost surely, 2^40715121 is an apocalyptic number.

It is an amenable number.

40715121 is a deficient number, since it is larger than the sum of its proper divisors (16249487).

40715121 is a wasteful number, since it uses less digits than its factorization.

40715121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7272.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 40715121 is about 6380.8401484444. The cubic root of 40715121 is about 344.0212291973.

Adding to 40715121 its reverse (12151704), we get a palindrome (52866825).

The spelling of 40715121 in words is "forty million, seven hundred fifteen thousand, one hundred twenty-one".