30040143 has 32 divisors (see below), whose sum is σ = 47900160. Its totient is φ = 16383360.

The previous prime is 30040141. The next prime is 30040151. The reversal of 30040143 is 34104003.

It is not a de Polignac number, because 30040143 - 2¹ = 30040141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30040141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64933 + ... + 65393.

It is an arithmetic number, because the mean of its divisors is an integer number (1496880).

Almost surely, 2^30040143 is an apocalyptic number.

30040143 is a deficient number, since it is larger than the sum of its proper divisors (17860017).

30040143 is a wasteful number, since it uses less digits than its factorization.

30040143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 30040143 is about 5480.8888877626. Note that the first 5 decimals coincide. The cubic root of 30040143 is about 310.8617817514.

Adding to 30040143 its reverse (34104003), we get a palindrome (64144146).

The spelling of 30040143 in words is "thirty million, forty thousand, one hundred forty-three".