40938143 has 4 divisors (see below), whose sum is σ = 41071800. Its totient is φ = 40804488.

The previous prime is 40938119. The next prime is 40938151. The reversal of 40938143 is 34183904.

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 40938143 - 2¹⁴ = 40921759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40938113) 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, 66368 + ... + 66981.

It is an arithmetic number, because the mean of its divisors is an integer number (10267950).

Almost surely, 2^40938143 is an apocalyptic number.

40938143 is a deficient number, since it is larger than the sum of its proper divisors (133657).

40938143 is a wasteful number, since it uses less digits than its factorization.

40938143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133656.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 40938143 is about 6398.2921940155. The cubic root of 40938143 is about 344.6482250699.

The spelling of 40938143 in words is "forty million, nine hundred thirty-eight thousand, one hundred forty-three".