423040443442 has 32 divisors (see below), whose sum is σ = 663527058480. Its totient is φ = 202025779200.

The previous prime is 423040443433. The next prime is 423040443451. The reversal of 423040443442 is 244344040324.

It is an interprime number because it is at equal distance from previous prime (423040443433) and next prime (423040443451).

It can be written as a sum of positive squares in 8 ways, for example, as 328318686081 + 94721757361 = 572991^2 + 307769^2 .

It is a junction number, because it is equal to n+sod(n) for n = 423040443398 and 423040443407.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6722958 + ... + 6785590.

Almost surely, 2^423040443442 is an apocalyptic number.

423040443442 is a deficient number, since it is larger than the sum of its proper divisors (240486615038).

423040443442 is a wasteful number, since it uses less digits than its factorization.

423040443442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63918.

The product of its (nonzero) digits is 147456, while the sum is 34.

Adding to 423040443442 its reverse (244344040324), we get a palindrome (667384483766).

The spelling of 423040443442 in words is "four hundred twenty-three billion, forty million, four hundred forty-three thousand, four hundred forty-two".