40215135 has 8 divisors (see below), whose sum is σ = 64344240. Its totient is φ = 21448064.

The previous prime is 40215113. The next prime is 40215139. The reversal of 40215135 is 53151204.

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

It is a cyclic number.

It is not a de Polignac number, because 40215135 - 2⁹ = 40214623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40215139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1340490 + ... + 1340519.

It is an arithmetic number, because the mean of its divisors is an integer number (8043030).

Almost surely, 2^40215135 is an apocalyptic number.

40215135 is a deficient number, since it is larger than the sum of its proper divisors (24129105).

40215135 is a wasteful number, since it uses less digits than its factorization.

40215135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2681017.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 40215135 is about 6341.5404280033. The cubic root of 40215135 is about 342.6072195261.

Adding to 40215135 its reverse (53151204), we get a palindrome (93366339).

The spelling of 40215135 in words is "forty million, two hundred fifteen thousand, one hundred thirty-five".