402144340142 has 8 divisors (see below), whose sum is σ = 605805422976. Its totient is φ = 200209199152.

The previous prime is 402144340141. The next prime is 402144340159. The reversal of 402144340142 is 241043441204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402144340141) 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, 431484878 + ... + 431485809.

It is an arithmetic number, because the mean of its divisors is an integer number (75725677872).

Almost surely, 2^402144340142 is an apocalyptic number.

402144340142 is a deficient number, since it is larger than the sum of its proper divisors (203661082834).

402144340142 is a wasteful number, since it uses less digits than its factorization.

402144340142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862970922.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 402144340142 its reverse (241043441204), we get a palindrome (643187781346).

The spelling of 402144340142 in words is "four hundred two billion, one hundred forty-four million, three hundred forty thousand, one hundred forty-two".