140155440121442 has 8 divisors (see below), whose sum is σ = 210233239584732. Its totient is φ = 70077693593200.

The previous prime is 140155440121391. The next prime is 140155440121469. The reversal of 140155440121442 is 244121044551041.

It can be written as a sum of positive squares in 2 ways, for example, as 119276562947161 + 20878877174281 = 10921381^2 + 4569341^2 .

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

It is a super-2 number, since 2×140155440121442² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140155440121396 and 140155440121405.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5773409 + ... + 17709972.

Almost surely, 2^{140155440121442} is an apocalyptic number.

140155440121442 is a deficient number, since it is larger than the sum of its proper divisors (70077799463290).

140155440121442 is a wasteful number, since it uses less digits than its factorization.

140155440121442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26467524.

The product of its (nonzero) digits is 102400, while the sum is 38.

Adding to 140155440121442 its reverse (244121044551041), we get a palindrome (384276484672483).

The spelling of 140155440121442 in words is "one hundred forty trillion, one hundred fifty-five billion, four hundred forty million, one hundred twenty-one thousand, four hundred forty-two".