42423101 has 4 divisors (see below), whose sum is σ = 48483552. Its totient is φ = 36362652.

The previous prime is 42423089. The next prime is 42423107. The reversal of 42423101 is 10132424.

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 a de Polignac number, because none of the positive numbers 2^k-42423101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42423101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42423107) 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, 3030215 + ... + 3030228.

It is an arithmetic number, because the mean of its divisors is an integer number (12120888).

Almost surely, 2^42423101 is an apocalyptic number.

It is an amenable number.

42423101 is a deficient number, since it is larger than the sum of its proper divisors (6060451).

42423101 is an equidigital number, since it uses as much as digits as its factorization.

42423101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060450.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 42423101 is about 6513.3018508280. The cubic root of 42423101 is about 348.7659972193.

Adding to 42423101 its reverse (10132424), we get a palindrome (52555525).

It can be divided in two parts, 42423 and 101, that added together give a palindrome (42524).

The spelling of 42423101 in words is "forty-two million, four hundred twenty-three thousand, one hundred one".