42423253 has 4 divisors (see below), whose sum is σ = 42819840. Its totient is φ = 42026668.

The previous prime is 42423229. The next prime is 42423263. The reversal of 42423253 is 35232424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42423253 - 2¹⁷ = 42292181 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 (42423203) 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, 198133 + ... + 198346.

It is an arithmetic number, because the mean of its divisors is an integer number (10704960).

Almost surely, 2^42423253 is an apocalyptic number.

It is an amenable number.

42423253 is a deficient number, since it is larger than the sum of its proper divisors (396587).

42423253 is a wasteful number, since it uses less digits than its factorization.

42423253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396586.

The product of its digits is 5760, while the sum is 25.

The square root of 42423253 is about 6513.3135192466. The cubic root of 42423253 is about 348.7664137562.

Adding to 42423253 its reverse (35232424), we get a palindrome (77655677).

The spelling of 42423253 in words is "forty-two million, four hundred twenty-three thousand, two hundred fifty-three".