40505434 has 8 divisors (see below), whose sum is σ = 61195680. Its totient is φ = 20106876.

The previous prime is 40505401. The next prime is 40505449. The reversal of 40505434 is 43450504.

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 = 40505399 and 40505408.

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, 72574 + ... + 73129.

It is an arithmetic number, because the mean of its divisors is an integer number (7649460).

Almost surely, 2^40505434 is an apocalyptic number.

40505434 is a deficient number, since it is larger than the sum of its proper divisors (20690246).

40505434 is a wasteful number, since it uses less digits than its factorization.

40505434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145844.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 40505434 is about 6364.3879517201. The cubic root of 40505434 is about 343.4296310352.

Adding to 40505434 its reverse (43450504), we get a palindrome (83955938).

The spelling of 40505434 in words is "forty million, five hundred five thousand, four hundred thirty-four".