40730234 has 4 divisors (see below), whose sum is σ = 61095354. Its totient is φ = 20365116.

The previous prime is 40730233. The next prime is 40730251. The reversal of 40730234 is 43203704.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28654609 + 12075625 = 5353^2 + 3475^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40730231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10182557 + ... + 10182560.

Almost surely, 2^40730234 is an apocalyptic number.

40730234 is a deficient number, since it is larger than the sum of its proper divisors (20365120).

40730234 is a wasteful number, since it uses less digits than its factorization.

40730234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20365119.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 40730234 is about 6382.0242870111. The cubic root of 40730234 is about 344.0637895496.

Adding to 40730234 its reverse (43203704), we get a palindrome (83933938).

The spelling of 40730234 in words is "forty million, seven hundred thirty thousand, two hundred thirty-four".