140420560 has 40 divisors (see below), whose sum is σ = 373118976. Its totient is φ = 48144000.

The previous prime is 140420509. The next prime is 140420563. The reversal of 140420560 is 65024041.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140420563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124816 + ... + 125935.

Almost surely, 2^140420560 is an apocalyptic number.

140420560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140420560 is an abundant number, since it is smaller than the sum of its proper divisors (232698416).

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

140420560 is a wasteful number, since it uses less digits than its factorization.

140420560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250771 (or 250765 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 140420560 is about 11849.9181431772. The cubic root of 140420560 is about 519.7688321600.

The spelling of 140420560 in words is "one hundred forty million, four hundred twenty thousand, five hundred sixty".