40143240534 has 32 divisors (see below), whose sum is σ = 81438497280. Its totient is φ = 13189176000.

The previous prime is 40143240493. The next prime is 40143240551. The reversal of 40143240534 is 43504234104.

It is a super-2 number, since 2×40143240534² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2017434 + ... + 2037234.

It is an arithmetic number, because the mean of its divisors is an integer number (2544953040).

Almost surely, 2^40143240534 is an apocalyptic number.

40143240534 is an abundant number, since it is smaller than the sum of its proper divisors (41295256746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40143240534 is a wasteful number, since it uses less digits than its factorization.

40143240534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24636.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 40143240534 its reverse (43504234104), we get a palindrome (83647474638).

The spelling of 40143240534 in words is "forty billion, one hundred forty-three million, two hundred forty thousand, five hundred thirty-four".