140247760 has 40 divisors (see below), whose sum is σ = 334895976. Its totient is φ = 54581760.

The previous prime is 140247749. The next prime is 140247761. The reversal of 140247760 is 67742041.

It can be written as a sum of positive squares in 4 ways, for example, as 70090384 + 70157376 = 8372^2 + 8376^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140247761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20731 + ... + 26650.

Almost surely, 2^140247760 is an apocalyptic number.

140247760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140247760 is an abundant number, since it is smaller than the sum of its proper divisors (194648216).

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

140247760 is a wasteful number, since it uses less digits than its factorization.

140247760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47431 (or 47425 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 140247760 is about 11842.6247090753. The cubic root of 140247760 is about 519.5555373699. Note that the first 4 decimals are identical.

The spelling of 140247760 in words is "one hundred forty million, two hundred forty-seven thousand, seven hundred sixty".