140009100 has 432 divisors, whose sum is σ = 554131200. Its totient is φ = 26611200.

The previous prime is 140009069. The next prime is 140009101. The reversal of 140009100 is 1900041.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 140009100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140009101) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4827886 + ... + 4827914.

Almost surely, 2^140009100 is an apocalyptic number.

140009100 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 140009100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277065600).

140009100 is an abundant number, since it is smaller than the sum of its proper divisors (414122100).

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

140009100 is a wasteful number, since it uses less digits than its factorization.

140009100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 140009100 is about 11832.5441051365. The cubic root of 140009100 is about 519.2606603452.

Adding to 140009100 its reverse (1900041), we get a palindrome (141909141).

The spelling of 140009100 in words is "one hundred forty million, nine thousand, one hundred".