140550640 has 20 divisors (see below), whose sum is σ = 326780424. Its totient is φ = 56220224.

The previous prime is 140550593. The next prime is 140550653. The reversal of 140550640 is 46055041.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 878362 + ... + 878521.

Almost surely, 2^140550640 is an apocalyptic number.

140550640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140550640 is an abundant number, since it is smaller than the sum of its proper divisors (186229784).

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

140550640 is a wasteful number, since it uses less digits than its factorization.

140550640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756896 (or 1756890 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 140550640 is about 11855.4055181592. The cubic root of 140550640 is about 519.9292803234.

The spelling of 140550640 in words is "one hundred forty million, five hundred fifty thousand, six hundred forty".