475707421 has 4 divisors (see below), whose sum is σ = 543665632. Its totient is φ = 407749212.

The previous prime is 475707343. The next prime is 475707443. The reversal of 475707421 is 124707574.

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, and also an emirpimes, since its reverse is a distinct semiprime: 124707574 = 2 ⋅62353787.

It is a cyclic number.

It is not a de Polignac number, because 475707421 - 2⁷ = 475707293 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 (475705421) 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, 33979095 + ... + 33979108.

It is an arithmetic number, because the mean of its divisors is an integer number (135916408).

Almost surely, 2^475707421 is an apocalyptic number.

It is an amenable number.

475707421 is a deficient number, since it is larger than the sum of its proper divisors (67958211).

475707421 is an equidigital number, since it uses as much as digits as its factorization.

475707421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67958210.

The product of its (nonzero) digits is 54880, while the sum is 37.

The square root of 475707421 is about 21810.7180303630. The cubic root of 475707421 is about 780.6325249515.

The spelling of 475707421 in words is "four hundred seventy-five million, seven hundred seven thousand, four hundred twenty-one".