42300018 has 12 divisors (see below), whose sum is σ = 91650078. Its totient is φ = 14100000.

The previous prime is 42300001. The next prime is 42300019. The reversal of 42300018 is 81000324.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26594649 + 15705369 = 5157^2 + 3963^2 .

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: 2350001 = 42300018 / (4 + 2 + 3 + 0 + 0 + 0 + 1 + 8).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42300019) 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, 1174983 + ... + 1175018.

Almost surely, 2^42300018 is an apocalyptic number.

42300018 is an abundant number, since it is smaller than the sum of its proper divisors (49350060).

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

42300018 is a wasteful number, since it uses less digits than its factorization.

42300018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2350009 (or 2350006 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 42300018 is about 6503.8464004003. The cubic root of 42300018 is about 348.4283765486.

The spelling of 42300018 in words is "forty-two million, three hundred thousand, eighteen".