140421545505 has 96 divisors (see below), whose sum is σ = 249738577920. Its totient is φ = 72966579840.

The previous prime is 140421545437. The next prime is 140421545507. The reversal of 140421545505 is 505545124041.

140421545505 is a `hidden beast` number, since 1 + 40 + 4 + 21 + 545 + 50 + 5 = 666.

It is not a de Polignac number, because 140421545505 - 2⁹ = 140421544993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140421545505.

It is not an unprimeable number, because it can be changed into a prime (140421545507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 205594894 + ... + 205595576.

It is an arithmetic number, because the mean of its divisors is an integer number (2601443520).

Almost surely, 2^140421545505 is an apocalyptic number.

140421545505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140421545505 is a deficient number, since it is larger than the sum of its proper divisors (109317032415).

140421545505 is a wasteful number, since it uses less digits than its factorization.

140421545505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331 (or 1328 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

Adding to 140421545505 its reverse (505545124041), we get a palindrome (645966669546).

The spelling of 140421545505 in words is "one hundred forty billion, four hundred twenty-one million, five hundred forty-five thousand, five hundred five".