40121330 has 8 divisors (see below), whose sum is σ = 72218412. Its totient is φ = 16048528.

The previous prime is 40121327. The next prime is 40121339. The reversal of 40121330 is 3312104.

40121330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 33674809 + 6446521 = 5803^2 + 2539^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×40121330² = 3219442241937800, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40121339) 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 3 ways as a sum of consecutive naturals, for example, 2006057 + ... + 2006076.

Almost surely, 2^40121330 is an apocalyptic number.

40121330 is a deficient number, since it is larger than the sum of its proper divisors (32097082).

40121330 is a wasteful number, since it uses less digits than its factorization.

40121330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4012140.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 40121330 is about 6334.1400363427. The cubic root of 40121330 is about 342.3406259412.

Adding to 40121330 its reverse (3312104), we get a palindrome (43433434).

The spelling of 40121330 in words is "forty million, one hundred twenty-one thousand, three hundred thirty".