421011403 has 8 divisors (see below), whose sum is σ = 435301376. Its totient is φ = 406765800.

The previous prime is 421011379. The next prime is 421011421. The reversal of 421011403 is 304110124.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421011403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421011463) 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, 8800 + ... + 30322.

It is an arithmetic number, because the mean of its divisors is an integer number (54412672).

Almost surely, 2^421011403 is an apocalyptic number.

421011403 is a deficient number, since it is larger than the sum of its proper divisors (14289973).

421011403 is a wasteful number, since it uses less digits than its factorization.

421011403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22185.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 421011403 is about 20518.5624009091. The cubic root of 421011403 is about 749.4878892178.

Adding to 421011403 its reverse (304110124), we get a palindrome (725121527).

The spelling of 421011403 in words is "four hundred twenty-one million, eleven thousand, four hundred three".