471205421 has 4 divisors (see below), whose sum is σ = 471532512. Its totient is φ = 470878332.

The previous prime is 471205403. The next prime is 471205451. The reversal of 471205421 is 124502174.

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 471205421 - 2²² = 467011117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (471205451) 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, 161375 + ... + 164268.

It is an arithmetic number, because the mean of its divisors is an integer number (117883128).

Almost surely, 2^471205421 is an apocalyptic number.

It is an amenable number.

471205421 is a deficient number, since it is larger than the sum of its proper divisors (327091).

471205421 is a wasteful number, since it uses less digits than its factorization.

471205421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327090.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 471205421 is about 21707.2665483243. The cubic root of 471205421 is about 778.1621319592.

Adding to 471205421 its reverse (124502174), we get a palindrome (595707595).

The spelling of 471205421 in words is "four hundred seventy-one million, two hundred five thousand, four hundred twenty-one".