423541634 has 4 divisors (see below), whose sum is σ = 635312454. Its totient is φ = 211770816.

The previous prime is 423541633. The next prime is 423541637. The reversal of 423541634 is 436145324.

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., 235714609 + 187827025 = 15353^2 + 13705^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 423541634.

It is not an unprimeable number, because it can be changed into a prime (423541633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105885407 + ... + 105885410.

Almost surely, 2^423541634 is an apocalyptic number.

423541634 is a deficient number, since it is larger than the sum of its proper divisors (211770820).

423541634 is a wasteful number, since it uses less digits than its factorization.

423541634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211770819.

The product of its digits is 34560, while the sum is 32.

The square root of 423541634 is about 20580.1271619006. The cubic root of 423541634 is about 750.9863372461.

Adding to 423541634 its reverse (436145324), we get a palindrome (859686958).

The spelling of 423541634 in words is "four hundred twenty-three million, five hundred forty-one thousand, six hundred thirty-four".