40810121 has 8 divisors (see below), whose sum is σ = 44937504. Its totient is φ = 36752320.

The previous prime is 40810103. The next prime is 40810141. The reversal of 40810121 is 12101804.

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

It is a de Polignac number, because none of the positive numbers 2^k-40810121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40810121.

It is not an unprimeable number, because it can be changed into a prime (40810141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16160 + ... + 18513.

It is an arithmetic number, because the mean of its divisors is an integer number (5617188).

Almost surely, 2^40810121 is an apocalyptic number.

It is an amenable number.

40810121 is a deficient number, since it is larger than the sum of its proper divisors (4127383).

40810121 is a wasteful number, since it uses less digits than its factorization.

40810121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34791.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 40810121 is about 6388.2799719486. The cubic root of 40810121 is about 344.2885879414.

Adding to 40810121 its reverse (12101804), we get a palindrome (52911925).

The spelling of 40810121 in words is "forty million, eight hundred ten thousand, one hundred twenty-one".