40521434 has 8 divisors (see below), whose sum is σ = 60978528. Its totient is φ = 20195260.

The previous prime is 40521427. The next prime is 40521443. The reversal of 40521434 is 43412504.

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

It is a super-2 number, since 2×40521434² = 3283973226832712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31952 + ... + 33195.

It is an arithmetic number, because the mean of its divisors is an integer number (7622316).

Almost surely, 2^40521434 is an apocalyptic number.

40521434 is a deficient number, since it is larger than the sum of its proper divisors (20457094).

40521434 is a wasteful number, since it uses less digits than its factorization.

40521434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65460.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 40521434 is about 6365.6448220114. The cubic root of 40521434 is about 343.4748443165.

Adding to 40521434 its reverse (43412504), we get a palindrome (83933938).

The spelling of 40521434 in words is "forty million, five hundred twenty-one thousand, four hundred thirty-four".