40070543 has 4 divisors (see below), whose sum is σ = 40215480. Its totient is φ = 39925608.

The previous prime is 40070521. The next prime is 40070549. The reversal of 40070543 is 34507004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40070543 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 (40070549) 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, 72053 + ... + 72606.

It is an arithmetic number, because the mean of its divisors is an integer number (10053870).

Almost surely, 2^40070543 is an apocalyptic number.

40070543 is a deficient number, since it is larger than the sum of its proper divisors (144937).

40070543 is a wasteful number, since it uses less digits than its factorization.

40070543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144936.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 40070543 is about 6330.1297775006. The cubic root of 40070543 is about 342.1961159872.

Adding to 40070543 its reverse (34507004), we get a palindrome (74577547).

The spelling of 40070543 in words is "forty million, seventy thousand, five hundred forty-three".