42303123 has 24 divisors (see below), whose sum is σ = 64993968. Its totient is φ = 26422272.

The previous prime is 42303113. The next prime is 42303137. The reversal of 42303123 is 32130324.

It is not a de Polignac number, because 42303123 - 2¹² = 42299027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42303096 and 42303105.

It is not an unprimeable number, because it can be changed into a prime (42303113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42811 + ... + 43787.

It is an arithmetic number, because the mean of its divisors is an integer number (2708082).

Almost surely, 2^42303123 is an apocalyptic number.

42303123 is a deficient number, since it is larger than the sum of its proper divisors (22690845).

42303123 is a wasteful number, since it uses less digits than its factorization.

42303123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283 (or 1280 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 42303123 is about 6504.0851009193. The cubic root of 42303123 is about 348.4369017116.

Adding to 42303123 its reverse (32130324), we get a palindrome (74433447).

The spelling of 42303123 in words is "forty-two million, three hundred three thousand, one hundred twenty-three".