42031123 has 8 divisors (see below), whose sum is σ = 44692560. Its totient is φ = 39390720.

The previous prime is 42031111. The next prime is 42031127. The reversal of 42031123 is 32113024.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42031123 - 2²⁵ = 8476691 is a prime.

It is a super-2 number, since 2×42031123² = 3533230601282258, 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 = 42031097 and 42031106.

It is not an unprimeable number, because it can be changed into a prime (42031127) 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, 1033 + ... + 9226.

It is an arithmetic number, because the mean of its divisors is an integer number (5586570).

Almost surely, 2^42031123 is an apocalyptic number.

42031123 is a deficient number, since it is larger than the sum of its proper divisors (2661437).

42031123 is a wasteful number, since it uses less digits than its factorization.

42031123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10517.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 42031123 is about 6483.1414453180. The cubic root of 42031123 is about 347.6885039060.

Adding to 42031123 its reverse (32113024), we get a palindrome (74144147).

The spelling of 42031123 in words is "forty-two million, thirty-one thousand, one hundred twenty-three".