40145145 has 8 divisors (see below), whose sum is σ = 64232256. Its totient is φ = 21410736.

The previous prime is 40145113. The next prime is 40145167. The reversal of 40145145 is 54154104.

It is a happy number.

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

It is not a de Polignac number, because 40145145 - 2⁵ = 40145113 is a prime.

It is a super-2 number, since 2×40145145² = 3223265334142050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1338157 + ... + 1338186.

It is an arithmetic number, because the mean of its divisors is an integer number (8029032).

Almost surely, 2^40145145 is an apocalyptic number.

It is an amenable number.

40145145 is a deficient number, since it is larger than the sum of its proper divisors (24087111).

40145145 is a wasteful number, since it uses less digits than its factorization.

40145145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676351.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 40145145 is about 6336.0196495907. The cubic root of 40145145 is about 342.4083474369.

Adding to 40145145 its reverse (54154104), we get a palindrome (94299249).

The spelling of 40145145 in words is "forty million, one hundred forty-five thousand, one hundred forty-five".