140121534401540 has 24 divisors (see below), whose sum is σ = 294701740058880. Its totient is φ = 55963562748128.

The previous prime is 140121534401531. The next prime is 140121534401593. The reversal of 140121534401540 is 45104435121041.

It is a self number, because there is not a number n which added to its sum of digits gives 140121534401540.

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, 5315674772 + ... + 5315701131.

It is an arithmetic number, because the mean of its divisors is an integer number (12279239169120).

Almost surely, 2^{140121534401540} is an apocalyptic number.

140121534401540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140121534401540 is an abundant number, since it is smaller than the sum of its proper divisors (154580205657340).

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

140121534401540 is a wasteful number, since it uses less digits than its factorization.

140121534401540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10631376571 (or 10631376569 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

Adding to 140121534401540 its reverse (45104435121041), we get a palindrome (185225969522581).

The spelling of 140121534401540 in words is "one hundred forty trillion, one hundred twenty-one billion, five hundred thirty-four million, four hundred one thousand, five hundred forty".