40301243 has 4 divisors (see below), whose sum is σ = 40591320. Its totient is φ = 40011168.

The previous prime is 40301207. The next prime is 40301263. The reversal of 40301243 is 34210304.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40301243 - 2⁶ = 40301179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40301263) 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, 144830 + ... + 145107.

It is an arithmetic number, because the mean of its divisors is an integer number (10147830).

Almost surely, 2^40301243 is an apocalyptic number.

40301243 is a deficient number, since it is larger than the sum of its proper divisors (290077).

40301243 is a wasteful number, since it uses less digits than its factorization.

40301243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290076.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 40301243 is about 6348.3259998207. The cubic root of 40301243 is about 342.8515735620.

Adding to 40301243 its reverse (34210304), we get a palindrome (74511547).

The spelling of 40301243 in words is "forty million, three hundred one thousand, two hundred forty-three".