40121051 has 4 divisors (see below), whose sum is σ = 40180992. Its totient is φ = 40061112.

The previous prime is 40121023. The next prime is 40121057. The reversal of 40121051 is 15012104.

40121051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40121051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40121057) 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, 28955 + ... + 30308.

It is an arithmetic number, because the mean of its divisors is an integer number (10045248).

Almost surely, 2^40121051 is an apocalyptic number.

40121051 is a deficient number, since it is larger than the sum of its proper divisors (59941).

40121051 is an equidigital number, since it uses as much as digits as its factorization.

40121051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59940.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 40121051 is about 6334.1180127939. The cubic root of 40121051 is about 342.3398324044.

Adding to 40121051 its reverse (15012104), we get a palindrome (55133155).

The spelling of 40121051 in words is "forty million, one hundred twenty-one thousand, fifty-one".