40215106 has 4 divisors (see below), whose sum is σ = 60322662. Its totient is φ = 20107552.

The previous prime is 40215089. The next prime is 40215107. The reversal of 40215106 is 60151204.

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., 33166081 + 7049025 = 5759^2 + 2655^2 .

It is not an unprimeable number, because it can be changed into a prime (40215107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10053775 + ... + 10053778.

Almost surely, 2^40215106 is an apocalyptic number.

40215106 is a deficient number, since it is larger than the sum of its proper divisors (20107556).

40215106 is a wasteful number, since it uses less digits than its factorization.

40215106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20107555.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 40215106 is about 6341.5381414922. The cubic root of 40215106 is about 342.6071371723.

The spelling of 40215106 in words is "forty million, two hundred fifteen thousand, one hundred six".