423778241 has 4 divisors (see below), whose sum is σ = 425141184. Its totient is φ = 422415300.

The previous prime is 423778231. The next prime is 423778249. The reversal of 423778241 is 142877324.

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 423778241 - 2⁶ = 423778177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423778195 and 423778204.

It is not an unprimeable number, because it can be changed into a prime (423778249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 681005 + ... + 681626.

It is an arithmetic number, because the mean of its divisors is an integer number (106285296).

Almost surely, 2^423778241 is an apocalyptic number.

It is an amenable number.

423778241 is a deficient number, since it is larger than the sum of its proper divisors (1362943).

423778241 is a wasteful number, since it uses less digits than its factorization.

423778241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362942.

The product of its digits is 75264, while the sum is 38.

The square root of 423778241 is about 20585.8747931683. The cubic root of 423778241 is about 751.1261547063.

The spelling of 423778241 in words is "four hundred twenty-three million, seven hundred seventy-eight thousand, two hundred forty-one".