140121043035521 has 8 divisors (see below), whose sum is σ = 140187193464864. Its totient is φ = 140054901132960.

The previous prime is 140121043035487. The next prime is 140121043035583. The reversal of 140121043035521 is 125530340121041.

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

It is a cyclic number.

It is not a de Polignac number, because 140121043035521 - 2¹⁴ = 140121043019137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140121043038521) 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, 30862610 + ... + 35110436.

It is an arithmetic number, because the mean of its divisors is an integer number (17523399183108).

Almost surely, 2^{140121043035521} is an apocalyptic number.

It is an amenable number.

140121043035521 is a deficient number, since it is larger than the sum of its proper divisors (66150429343).

140121043035521 is a wasteful number, since it uses less digits than its factorization.

140121043035521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4263391.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 140121043035521 its reverse (125530340121041), we get a palindrome (265651383156562).

The spelling of 140121043035521 in words is "one hundred forty trillion, one hundred twenty-one billion, forty-three million, thirty-five thousand, five hundred twenty-one".