423402121234 has 32 divisors (see below), whose sum is σ = 672870003120. Its totient is φ = 199522455552.

The previous prime is 423402121223. The next prime is 423402121253. The reversal of 423402121234 is 432121204324.

It can be written as a sum of positive squares in 8 ways, for example, as 167571516025 + 255830605209 = 409355^2 + 505797^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104769 + ... + 926164.

Almost surely, 2^423402121234 is an apocalyptic number.

423402121234 is a deficient number, since it is larger than the sum of its proper divisors (249467881886).

423402121234 is a wasteful number, since it uses less digits than its factorization.

423402121234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031134.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 423402121234 its reverse (432121204324), we get a palindrome (855523325558).

The spelling of 423402121234 in words is "four hundred twenty-three billion, four hundred two million, one hundred twenty-one thousand, two hundred thirty-four".