40145233 has 8 divisors (see below), whose sum is σ = 42363200. Its totient is φ = 37937808.

The previous prime is 40145227. The next prime is 40145243. The reversal of 40145233 is 33254104.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40145233 is a prime.

It is a super-2 number, since 2×40145233² = 3223279465248578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40145213) 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, 5935 + ... + 10747.

It is an arithmetic number, because the mean of its divisors is an integer number (5295400).

Almost surely, 2^40145233 is an apocalyptic number.

It is an amenable number.

40145233 is a deficient number, since it is larger than the sum of its proper divisors (2217967).

40145233 is a wasteful number, since it uses less digits than its factorization.

40145233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5271.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 40145233 is about 6336.0265940098. The cubic root of 40145233 is about 342.4085976284.

Adding to 40145233 its reverse (33254104), we get a palindrome (73399337).

The spelling of 40145233 in words is "forty million, one hundred forty-five thousand, two hundred thirty-three".