423438442 has 8 divisors (see below), whose sum is σ = 725894496. Its totient is φ = 181473612.

The previous prime is 423438439. The next prime is 423438443. The reversal of 423438442 is 244834324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×423438442² = 358600228326774728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 423438398 and 423438407.

It is not an unprimeable number, because it can be changed into a prime (423438443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15122788 + ... + 15122815.

It is an arithmetic number, because the mean of its divisors is an integer number (90736812).

Almost surely, 2^423438442 is an apocalyptic number.

423438442 is a deficient number, since it is larger than the sum of its proper divisors (302456054).

423438442 is a wasteful number, since it uses less digits than its factorization.

423438442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30245612.

The product of its digits is 73728, while the sum is 34.

The square root of 423438442 is about 20577.6199304001. The cubic root of 423438442 is about 750.9253420015.

The spelling of 423438442 in words is "four hundred twenty-three million, four hundred thirty-eight thousand, four hundred forty-two".