40206145 has 8 divisors (see below), whose sum is σ = 55139904. Its totient is φ = 27569904.

The previous prime is 40206143. The next prime is 40206149. The reversal of 40206145 is 54160204.

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 40206145 - 2¹ = 40206143 is a prime.

It is a super-2 number, since 2×40206145² = 3233068191522050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40206143) 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, 574339 + ... + 574408.

It is an arithmetic number, because the mean of its divisors is an integer number (6892488).

Almost surely, 2^40206145 is an apocalyptic number.

It is an amenable number.

40206145 is a deficient number, since it is larger than the sum of its proper divisors (14933759).

40206145 is a wasteful number, since it uses less digits than its factorization.

40206145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148759.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 40206145 is about 6340.8315700703. The cubic root of 40206145 is about 342.5816879408.

Adding to 40206145 its reverse (54160204), we get a palindrome (94366349).

The spelling of 40206145 in words is "forty million, two hundred six thousand, one hundred forty-five".