140421033440440 has 64 divisors (see below), whose sum is σ = 319187671221600. Its totient is φ = 55593298595328.

The previous prime is 140421033440357. The next prime is 140421033440447. The reversal of 140421033440440 is 44044330124041.

It is a junction number, because it is equal to n+sod(n) for n = 140421033440396 and 140421033440405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140421033440447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10045479 + ... + 19538518.

Almost surely, 2^{140421033440440} is an apocalyptic number.

140421033440440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140421033440440 is an abundant number, since it is smaller than the sum of its proper divisors (178766637781160).

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

140421033440440 is a wasteful number, since it uses less digits than its factorization.

140421033440440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29585224 (or 29585220 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 140421033440440 its reverse (44044330124041), we get a palindrome (184465363564481).

The spelling of 140421033440440 in words is "one hundred forty trillion, four hundred twenty-one billion, thirty-three million, four hundred forty thousand, four hundred forty".