140905520 has 240 divisors, whose sum is σ = 428597568. Its totient is φ = 42024960.

The previous prime is 140905507. The next prime is 140905529. The reversal of 140905520 is 25509041.

It is a self number, because there is not a number n which added to its sum of digits gives 140905520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140905529) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3436700 + ... + 3436740.

Almost surely, 2^140905520 is an apocalyptic number.

140905520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140905520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214298784).

140905520 is an abundant number, since it is smaller than the sum of its proper divisors (287692048).

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

140905520 is a wasteful number, since it uses less digits than its factorization.

140905520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 140905520 is about 11870.3630946993. The cubic root of 140905520 is about 520.3665069036.

The spelling of 140905520 in words is "one hundred forty million, nine hundred five thousand, five hundred twenty".