131440400042 has 16 divisors (see below), whose sum is σ = 225397624320. Its totient is φ = 56313793968.

The previous prime is 131440400041. The next prime is 131440400051. The reversal of 131440400042 is 240004044131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131440399990 and 131440400017.

It is not an unprimeable number, because it can be changed into a prime (131440400041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1437917 + ... + 1526592.

It is an arithmetic number, because the mean of its divisors is an integer number (14087351520).

Almost surely, 2^131440400042 is an apocalyptic number.

131440400042 is a deficient number, since it is larger than the sum of its proper divisors (93957224278).

131440400042 is a wasteful number, since it uses less digits than its factorization.

131440400042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967685.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 131440400042 its reverse (240004044131), we get a palindrome (371444444173).

The spelling of 131440400042 in words is "one hundred thirty-one billion, four hundred forty million, four hundred thousand, forty-two".