423881242 has 4 divisors (see below), whose sum is σ = 635821866. Its totient is φ = 211940620.

The previous prime is 423881239. The next prime is 423881243. The reversal of 423881242 is 242188324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 338891281 + 84989961 = 18409^2 + 9219^2 .

It is a junction number, because it is equal to n+sod(n) for n = 423881198 and 423881207.

It is not an unprimeable number, because it can be changed into a prime (423881243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105970309 + ... + 105970312.

Almost surely, 2^423881242 is an apocalyptic number.

423881242 is a deficient number, since it is larger than the sum of its proper divisors (211940624).

423881242 is a wasteful number, since it uses less digits than its factorization.

423881242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211940623.

The product of its digits is 24576, while the sum is 34.

The square root of 423881242 is about 20588.3763808611. The cubic root of 423881242 is about 751.1870045174.

The spelling of 423881242 in words is "four hundred twenty-three million, eight hundred eighty-one thousand, two hundred forty-two".