40667243 has 4 divisors (see below), whose sum is σ = 42435408. Its totient is φ = 38899080.

The previous prime is 40667233. The next prime is 40667269. The reversal of 40667243 is 34276604.

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 40667243 - 2⁸ = 40666987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40667233) 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, 884048 + ... + 884093.

It is an arithmetic number, because the mean of its divisors is an integer number (10608852).

Almost surely, 2^40667243 is an apocalyptic number.

40667243 is a deficient number, since it is larger than the sum of its proper divisors (1768165).

40667243 is a wasteful number, since it uses less digits than its factorization.

40667243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768164.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 40667243 is about 6377.0873445484. The cubic root of 40667243 is about 343.8863283835.

The spelling of 40667243 in words is "forty million, six hundred sixty-seven thousand, two hundred forty-three".