42290023 has 4 divisors (see below), whose sum is σ = 42534648. Its totient is φ = 42045400.

The previous prime is 42290021. The next prime is 42290047. The reversal of 42290023 is 32009224.

42290023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42290023 - 2¹ = 42290021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42289976 and 42290003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42290021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122053 + ... + 122398.

It is an arithmetic number, because the mean of its divisors is an integer number (10633662).

Almost surely, 2^42290023 is an apocalyptic number.

42290023 is a deficient number, since it is larger than the sum of its proper divisors (244625).

42290023 is a wasteful number, since it uses less digits than its factorization.

42290023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244624.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 42290023 is about 6503.0779635493. The cubic root of 42290023 is about 348.4009312021.

Adding to 42290023 its reverse (32009224), we get a palindrome (74299247).

The spelling of 42290023 in words is "forty-two million, two hundred ninety thousand, twenty-three".