417640121 has 4 divisors (see below), whose sum is σ = 439621200. Its totient is φ = 395659044.

The previous prime is 417640117. The next prime is 417640133. The reversal of 417640121 is 121046714.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 417640121 - 2² = 417640117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (417640021) 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, 10990511 + ... + 10990548.

It is an arithmetic number, because the mean of its divisors is an integer number (109905300).

Almost surely, 2^417640121 is an apocalyptic number.

It is an amenable number.

417640121 is a deficient number, since it is larger than the sum of its proper divisors (21981079).

417640121 is a wasteful number, since it uses less digits than its factorization.

417640121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21981078.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 417640121 is about 20436.2452764690. The cubic root of 417640121 is about 747.4819977544.

Adding to 417640121 its reverse (121046714), we get a palindrome (538686835).

The spelling of 417640121 in words is "four hundred seventeen million, six hundred forty thousand, one hundred twenty-one".