423761 has 8 divisors (see below), whose sum is σ = 469224. Its totient is φ = 380160.

The previous prime is 423751. The next prime is 423763. The reversal of 423761 is 167324.

It can be written as a sum of positive squares in 4 ways, for example, as 25600 + 398161 = 160^2 + 631^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 423761 - 2⁶ = 423697 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 (423763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41 + ... + 921.

It is an arithmetic number, because the mean of its divisors is an integer number (58653).

2⁴²³⁷⁶¹ is an apocalyptic number.

It is an amenable number.

423761 is a deficient number, since it is larger than the sum of its proper divisors (45463).

423761 is a wasteful number, since it uses less digits than its factorization.

423761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931.

The product of its digits is 1008, while the sum is 23.

The square root of 423761 is about 650.9692773088. The cubic root of 423761 is about 75.1115968292. Note that the first 3 decimals are identical.

The spelling of 423761 in words is "four hundred twenty-three thousand, seven hundred sixty-one".