23430042 has 12 divisors (see below), whose sum is σ = 50765130. Its totient is φ = 7810008.

The previous prime is 23430041. The next prime is 23430047. The reversal of 23430042 is 24003432.

It can be written as a sum of positive squares in only one way, i.e., 18326961 + 5103081 = 4281^2 + 2259^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1301669 = 23430042 / (2 + 3 + 4 + 3 + 0 + 0 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 23429997 and 23430024.

It is not an unprimeable number, because it can be changed into a prime (23430041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 650817 + ... + 650852.

Almost surely, 2^23430042 is an apocalyptic number.

23430042 is an abundant number, since it is smaller than the sum of its proper divisors (27335088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23430042 is a wasteful number, since it uses less digits than its factorization.

23430042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301677 (or 1301674 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 23430042 is about 4840.4588625460. The cubic root of 23430042 is about 286.1482026489.

Adding to 23430042 its reverse (24003432), we get a palindrome (47433474).

It can be divided in two parts, 234 and 30042, that added together give a square (30276 = 174²).

The spelling of 23430042 in words is "twenty-three million, four hundred thirty thousand, forty-two".