40120307 has 4 divisors (see below), whose sum is σ = 40133016. Its totient is φ = 40107600.

The previous prime is 40120273. The next prime is 40120309. The reversal of 40120307 is 70302104.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40120307 - 2¹⁸ = 39858163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40120309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2423 + ... + 9279.

It is an arithmetic number, because the mean of its divisors is an integer number (10033254).

Almost surely, 2^40120307 is an apocalyptic number.

40120307 is a deficient number, since it is larger than the sum of its proper divisors (12709).

40120307 is an equidigital number, since it uses as much as digits as its factorization.

40120307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12708.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 40120307 is about 6334.0592829559. The cubic root of 40120307 is about 342.3377162883.

The spelling of 40120307 in words is "forty million, one hundred twenty thousand, three hundred seven".