423313642 has 4 divisors (see below), whose sum is σ = 634970466. Its totient is φ = 211656820.

The previous prime is 423313621. The next prime is 423313661. The reversal of 423313642 is 246313324.

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., 364008241 + 59305401 = 19079^2 + 7701^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 423313642.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105828409 + ... + 105828412.

Almost surely, 2^423313642 is an apocalyptic number.

423313642 is a deficient number, since it is larger than the sum of its proper divisors (211656824).

423313642 is a wasteful number, since it uses less digits than its factorization.

423313642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211656823.

The product of its digits is 10368, while the sum is 28.

The square root of 423313642 is about 20574.5872862617. The cubic root of 423313642 is about 750.8515613510.

Adding to 423313642 its reverse (246313324), we get a palindrome (669626966).

The spelling of 423313642 in words is "four hundred twenty-three million, three hundred thirteen thousand, six hundred forty-two".