42435423 has 6 divisors (see below), whose sum is σ = 61295624. Its totient is φ = 28290276.

The previous prime is 42435401. The next prime is 42435431. The reversal of 42435423 is 32453424.

It is not a de Polignac number, because 42435423 - 2⁶ = 42435359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42435623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2357515 + ... + 2357532.

Almost surely, 2^42435423 is an apocalyptic number.

42435423 is a deficient number, since it is larger than the sum of its proper divisors (18860201).

42435423 is a wasteful number, since it uses less digits than its factorization.

42435423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4715053 (or 4715050 counting only the distinct ones).

The product of its digits is 11520, while the sum is 27.

The square root of 42435423 is about 6514.2476925582. The cubic root of 42435423 is about 348.7997608882.

Adding to 42435423 its reverse (32453424), we get a palindrome (74888847).

The spelling of 42435423 in words is "forty-two million, four hundred thirty-five thousand, four hundred twenty-three".