40021034 has 4 divisors (see below), whose sum is σ = 60031554. Its totient is φ = 20010516.

The previous prime is 40021021. The next prime is 40021061. The reversal of 40021034 is 43012004.

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., 34845409 + 5175625 = 5903^2 + 2275^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005257 + ... + 10005260.

Almost surely, 2^40021034 is an apocalyptic number.

40021034 is a deficient number, since it is larger than the sum of its proper divisors (20010520).

40021034 is a wasteful number, since it uses less digits than its factorization.

40021034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20010519.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 40021034 is about 6326.2179854950. The cubic root of 40021034 is about 342.0551248876.

Adding to 40021034 its reverse (43012004), we get a palindrome (83033038).

The spelling of 40021034 in words is "forty million, twenty-one thousand, thirty-four".