140555100 has 72 divisors (see below), whose sum is σ = 464775808. Its totient is φ = 32126400.

The previous prime is 140555087. The next prime is 140555101. The reversal of 140555100 is 1555041.

It is a super-2 number, since 2×140555100² = 39511472272020000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140555101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31366 + ... + 35565.

Almost surely, 2^140555100 is an apocalyptic number.

140555100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140555100 is an abundant number, since it is smaller than the sum of its proper divisors (324220708).

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

140555100 is a wasteful number, since it uses less digits than its factorization.

140555100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66955 (or 66948 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 140555100 is about 11855.5936165171. The cubic root of 140555100 is about 519.9347797886.

The spelling of 140555100 in words is "one hundred forty million, five hundred fifty-five thousand, one hundred".