40344243220142 has 16 divisors (see below), whose sum is σ = 60949976785152. Its totient is φ = 20027947908960.

The previous prime is 40344243220139. The next prime is 40344243220201. The reversal of 40344243220142 is 24102234244304.

It is a super-2 number, since 2×40344243220142² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90681998 + ... + 91125809.

It is an arithmetic number, because the mean of its divisors is an integer number (3809373549072).

Almost surely, 2^{40344243220142} is an apocalyptic number.

40344243220142 is a deficient number, since it is larger than the sum of its proper divisors (20605733565010).

40344243220142 is a wasteful number, since it uses less digits than its factorization.

40344243220142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181808603.

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 40344243220142 its reverse (24102234244304), we get a palindrome (64446477464446).

The spelling of 40344243220142 in words is "forty trillion, three hundred forty-four billion, two hundred forty-three million, two hundred twenty thousand, one hundred forty-two".