140445900 has 180 divisors, whose sum is σ = 520518768. Its totient is φ = 32088960.

The previous prime is 140445863. The next prime is 140445931. The reversal of 140445900 is 9544041.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 55462 + ... + 57938.

Almost surely, 2^140445900 is an apocalyptic number.

140445900 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 140445900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260259384).

140445900 is an abundant number, since it is smaller than the sum of its proper divisors (380072868).

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

140445900 is a wasteful number, since it uses less digits than its factorization.

140445900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510 (or 2494 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 140445900 is about 11850.9873006429. The cubic root of 140445900 is about 519.8000957442.

Adding to 140445900 its reverse (9544041), we get a palindrome (149989941).

It can be divided in two parts, 140 and 445900, that added together give a triangular number (446040 = T₉₄₄).

The spelling of 140445900 in words is "one hundred forty million, four hundred forty-five thousand, nine hundred".