140742720 has 84 divisors (see below), whose sum is σ = 484106220. Its totient is φ = 37530624.

The previous prime is 140742691. The next prime is 140742733. The reversal of 140742720 is 27247041.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41062464 + 99680256 = 6408^2 + 9984^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21555 + ... + 27314.

Almost surely, 2^140742720 is an apocalyptic number.

140742720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140742720 is an abundant number, since it is smaller than the sum of its proper divisors (343363500).

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

140742720 is a wasteful number, since it uses less digits than its factorization.

140742720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48892 (or 48879 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 140742720 is about 11863.5036983178. The cubic root of 140742720 is about 520.1660219387.

Adding to 140742720 its reverse (27247041), we get a palindrome (167989761).

The spelling of 140742720 in words is "one hundred forty million, seven hundred forty-two thousand, seven hundred twenty".