40254121 has 2 divisors, whose sum is σ = 40254122. Its totient is φ = 40254120.

The previous prime is 40254119. The next prime is 40254131. The reversal of 40254121 is 12145204.

40254121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26378496 + 13875625 = 5136^2 + 3725^2 .

It is a cyclic number.

It is not a de Polignac number, because 40254121 - 2¹ = 40254119 is a prime.

Together with 40254119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40254131) 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 as a sum of consecutive naturals, namely, 20127060 + 20127061.

It is an arithmetic number, because the mean of its divisors is an integer number (20127061).

Almost surely, 2^40254121 is an apocalyptic number.

It is an amenable number.

40254121 is a deficient number, since it is larger than the sum of its proper divisors (1).

40254121 is an equidigital number, since it uses as much as digits as its factorization.

40254121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 40254121 is about 6344.6135422104. The cubic root of 40254121 is about 342.7178956946.

Adding to 40254121 its reverse (12145204), we get a palindrome (52399325).

The spelling of 40254121 in words is "forty million, two hundred fifty-four thousand, one hundred twenty-one".