140246720 has 28 divisors (see below), whose sum is σ = 333963264. Its totient is φ = 56098560.

The previous prime is 140246713. The next prime is 140246723. The reversal of 140246720 is 27642041.

It is a self number, because there is not a number n which added to its sum of digits gives 140246720.

It is not an unprimeable number, because it can be changed into a prime (140246723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218816 + ... + 219455.

Almost surely, 2^140246720 is an apocalyptic number.

140246720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140246720 is an abundant number, since it is smaller than the sum of its proper divisors (193716544).

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

140246720 is an equidigital number, since it uses as much as digits as its factorization.

140246720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438288 (or 438278 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 140246720 is about 11842.5807998088. The cubic root of 140246720 is about 519.5542531210.

Adding to 140246720 its reverse (27642041), we get a palindrome (167888761).

The spelling of 140246720 in words is "one hundred forty million, two hundred forty-six thousand, seven hundred twenty".