40143023340 has 48 divisors (see below), whose sum is σ = 128457676032. Its totient is φ = 9175548096.

The previous prime is 40143023339. The next prime is 40143023341. The reversal of 40143023340 is 4332034104.

It is an interprime number because it is at equal distance from previous prime (40143023339) and next prime (40143023341).

It is a super-2 number, since 2×40143023340² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40143023340.

It is not an unprimeable number, because it can be changed into a prime (40143023341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47788894 + ... + 47789733.

It is an arithmetic number, because the mean of its divisors is an integer number (2676201584).

Almost surely, 2^40143023340 is an apocalyptic number.

It is an amenable number.

40143023340 is an abundant number, since it is smaller than the sum of its proper divisors (88314652692).

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

40143023340 is a wasteful number, since it uses less digits than its factorization.

40143023340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95578646 (or 95578644 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 40143023340 its reverse (4332034104), we get a palindrome (44475057444).

The spelling of 40143023340 in words is "forty billion, one hundred forty-three million, twenty-three thousand, three hundred forty".