40002305 has 8 divisors (see below), whose sum is σ = 54860352. Its totient is φ = 27430128.

The previous prime is 40002301. The next prime is 40002329. The reversal of 40002305 is 50320004.

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 40002305 - 2² = 40002301 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40002305.

It is not an unprimeable number, because it can be changed into a prime (40002301) 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, 571427 + ... + 571496.

It is an arithmetic number, because the mean of its divisors is an integer number (6857544).

Almost surely, 2^40002305 is an apocalyptic number.

It is an amenable number.

40002305 is a deficient number, since it is larger than the sum of its proper divisors (14858047).

40002305 is a wasteful number, since it uses less digits than its factorization.

40002305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142935.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 40002305 is about 6324.7375439618. The cubic root of 40002305 is about 342.0017583668.

Adding to 40002305 its reverse (50320004), we get a palindrome (90322309).

The spelling of 40002305 in words is "forty million, two thousand, three hundred five".