474740421 has 4 divisors (see below), whose sum is σ = 632987232. Its totient is φ = 316493612.

The previous prime is 474740393. The next prime is 474740429. The reversal of 474740421 is 124047474.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-474740421 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (474740429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79123401 + ... + 79123406.

It is an arithmetic number, because the mean of its divisors is an integer number (158246808).

Almost surely, 2^474740421 is an apocalyptic number.

It is an amenable number.

474740421 is a deficient number, since it is larger than the sum of its proper divisors (158246811).

474740421 is a wasteful number, since it uses less digits than its factorization.

474740421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158246810.

The product of its (nonzero) digits is 25088, while the sum is 33.

The square root of 474740421 is about 21788.5387532069. The cubic root of 474740421 is about 780.1032194105.

Adding to 474740421 its reverse (124047474), we get a palindrome (598787895).

The spelling of 474740421 in words is "four hundred seventy-four million, seven hundred forty thousand, four hundred twenty-one".