140520900 has 144 divisors (see below), whose sum is σ = 442721664. Its totient is φ = 34206720.

The previous prime is 140520889. The next prime is 140520911. The reversal of 140520900 is 9025041.

It is an interprime number because it is at equal distance from previous prime (140520889) and next prime (140520911).

It is a super-2 number, since 2×140520900² = 39492246673620000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 534169 + ... + 534431.

It is an arithmetic number, because the mean of its divisors is an integer number (3074456).

Almost surely, 2^140520900 is an apocalyptic number.

140520900 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 140520900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221360832).

140520900 is an abundant number, since it is smaller than the sum of its proper divisors (302200764).

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

140520900 is a wasteful number, since it uses less digits than its factorization.

140520900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 140520900 is about 11854.1511716360. The cubic root of 140520900 is about 519.8926060269.

Adding to 140520900 its reverse (9025041), we get a palindrome (149545941).

The spelling of 140520900 in words is "one hundred forty million, five hundred twenty thousand, nine hundred".