40030 has 8 divisors (see below), whose sum is σ = 72072. Its totient is φ = 16008.

The previous prime is 40013. The next prime is 40031. The reversal of 40030 is 3004.

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

It is a junction number, because it is equal to n+sod(n) for n = 39995 and 40022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40031) by changing a digit.

40030 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1992 + ... + 2011.

It is an arithmetic number, because the mean of its divisors is an integer number (9009).

2⁴⁰⁰³⁰ is an apocalyptic number.

40030 is a deficient number, since it is larger than the sum of its proper divisors (32042).

40030 is a wasteful number, since it uses less digits than its factorization.

40030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4010.

The product of its (nonzero) digits is 12, while the sum is 7.

The square root of 40030 is about 200.0749859428. The cubic root of 40030 is about 34.2080666767.

Adding to 40030 its reverse (3004), we get a palindrome (43034).

The spelling of 40030 in words is "forty thousand, thirty", and thus it is an eban number.