423534142 has 4 divisors (see below), whose sum is σ = 635301216. Its totient is φ = 211767070.

The previous prime is 423534113. The next prime is 423534151. The reversal of 423534142 is 241435324.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 423534142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105883534 + ... + 105883537.

It is an arithmetic number, because the mean of its divisors is an integer number (158825304).

Almost surely, 2^423534142 is an apocalyptic number.

423534142 is a deficient number, since it is larger than the sum of its proper divisors (211767074).

423534142 is a wasteful number, since it uses less digits than its factorization.

423534142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211767073.

The product of its digits is 11520, while the sum is 28.

The square root of 423534142 is about 20579.9451408404. The cubic root of 423534142 is about 750.9819091708.

Adding to 423534142 its reverse (241435324), we get a palindrome (664969466).

The spelling of 423534142 in words is "four hundred twenty-three million, five hundred thirty-four thousand, one hundred forty-two".