403420641 has 8 divisors (see below), whose sum is σ = 579270720. Its totient is φ = 248258832.

The previous prime is 403420637. The next prime is 403420669. The reversal of 403420641 is 146024304.

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

It is not a de Polignac number, because 403420641 - 2² = 403420637 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (403420631) 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, 5172021 + ... + 5172098.

It is an arithmetic number, because the mean of its divisors is an integer number (72408840).

Almost surely, 2^403420641 is an apocalyptic number.

It is an amenable number.

403420641 is a deficient number, since it is larger than the sum of its proper divisors (175850079).

403420641 is a wasteful number, since it uses less digits than its factorization.

403420641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10344135.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 403420641 is about 20085.3339778058. Note that the first 3 decimals coincide. The cubic root of 403420641 is about 738.9006325891.

Adding to 403420641 its reverse (146024304), we get a palindrome (549444945).

The spelling of 403420641 in words is "four hundred three million, four hundred twenty thousand, six hundred forty-one".