42340423 has 8 divisors (see below), whose sum is σ = 43459328. Its totient is φ = 41227704.

The previous prime is 42340411. The next prime is 42340427. The reversal of 42340423 is 32404324.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42340423 is a prime.

It is a super-2 number, since 2×42340423² = 3585422839637858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42340394 and 42340403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42340427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14440 + ... + 17122.

It is an arithmetic number, because the mean of its divisors is an integer number (5432416).

Almost surely, 2^42340423 is an apocalyptic number.

42340423 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

42340423 is a deficient number, since it is larger than the sum of its proper divisors (1118905).

42340423 is a wasteful number, since it uses less digits than its factorization.

42340423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3093.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 42340423 is about 6506.9518977783. The cubic root of 42340423 is about 348.5392809019.

Adding to 42340423 its reverse (32404324), we get a palindrome (74744747).

The spelling of 42340423 in words is "forty-two million, three hundred forty thousand, four hundred twenty-three".