140779780 has 48 divisors (see below), whose sum is σ = 309625344. Its totient is φ = 53665920.

The previous prime is 140779763. The next prime is 140779781. The reversal of 140779780 is 87977041.

140779780 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (140779781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212650 + ... + 213310.

It is an arithmetic number, because the mean of its divisors is an integer number (6450528).

Almost surely, 2^140779780 is an apocalyptic number.

140779780 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 140779780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154812672).

140779780 is an abundant number, since it is smaller than the sum of its proper divisors (168845564).

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

140779780 is a wasteful number, since it uses less digits than its factorization.

140779780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156 (or 1154 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 43.

The square root of 140779780 is about 11865.0655286855. The cubic root of 140779780 is about 520.2116741780.

The spelling of 140779780 in words is "one hundred forty million, seven hundred seventy-nine thousand, seven hundred eighty".