140421344136 has 128 divisors (see below), whose sum is σ = 368445542400. Its totient is φ = 44512666880.

The previous prime is 140421344123. The next prime is 140421344143. The reversal of 140421344136 is 631443124041.

It is a junction number, because it is equal to n+sod(n) for n = 140421344097 and 140421344106.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87380245 + ... + 87381851.

It is an arithmetic number, because the mean of its divisors is an integer number (2878480800).

Almost surely, 2^140421344136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140421344136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184222771200).

140421344136 is an abundant number, since it is smaller than the sum of its proper divisors (228024198264).

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

140421344136 is a wasteful number, since it uses less digits than its factorization.

140421344136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459 (or 2455 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 140421344136 its reverse (631443124041), we get a palindrome (771864468177).

The spelling of 140421344136 in words is "one hundred forty billion, four hundred twenty-one million, three hundred forty-four thousand, one hundred thirty-six".