140420505510 has 144 divisors (see below), whose sum is σ = 389783669184. Its totient is φ = 35054773248.

The previous prime is 140420505509. The next prime is 140420505517. The reversal of 140420505510 is 15505024041.

140420505510 is a `hidden beast` number, since 1 + 40 + 4 + 20 + 50 + 551 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140420505517) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2206294 + ... + 2269046.

It is an arithmetic number, because the mean of its divisors is an integer number (2706831036).

Almost surely, 2^140420505510 is an apocalyptic number.

140420505510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 140420505510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194891834592).

140420505510 is an abundant number, since it is smaller than the sum of its proper divisors (249363163674).

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

140420505510 is a wasteful number, since it uses less digits than its factorization.

140420505510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62859 (or 62833 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 140420505510 its reverse (15505024041), we get a palindrome (155925529551).

The spelling of 140420505510 in words is "one hundred forty billion, four hundred twenty million, five hundred five thousand, five hundred ten".