40633121 has 4 divisors (see below), whose sum is σ = 40646292. Its totient is φ = 40619952.

The previous prime is 40633093. The next prime is 40633127. The reversal of 40633121 is 12133604.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 19140625 + 21492496 = 4375^2 + 4636^2 .

It is a cyclic number.

It is not a de Polignac number, because 40633121 - 2⁶ = 40633057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40633093 and 40633102.

It is not an unprimeable number, because it can be changed into a prime (40633127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 815 + ... + 9051.

It is an arithmetic number, because the mean of its divisors is an integer number (10161573).

Almost surely, 2^40633121 is an apocalyptic number.

It is an amenable number.

40633121 is a deficient number, since it is larger than the sum of its proper divisors (13171).

40633121 is an equidigital number, since it uses as much as digits as its factorization.

40633121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13170.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 40633121 is about 6374.4114238100. The cubic root of 40633121 is about 343.7901217742.

Adding to 40633121 its reverse (12133604), we get a palindrome (52766725).

The spelling of 40633121 in words is "forty million, six hundred thirty-three thousand, one hundred twenty-one".