140708262321 has 81 divisors (see below), whose sum is σ = 232534750539. Its totient is φ = 85075174800.

The previous prime is 140708262311. The next prime is 140708262329. The reversal of 140708262321 is 123262807041.

It is a happy number.

The square root of 140708262321 is 375111.

It is a perfect power (a square), and thus also a powerful number.

140708262321 is a `hidden beast` number, since 1 + 4 + 0 + 7 + 0 + 8 + 2 + 623 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 667653921 + 140040608400 = 25839^2 + 374220^2 .

It is a tau number, because it is divible by the number of its divisors (81).

It is not a de Polignac number, because 140708262321 - 2¹⁹ = 140707738033 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140708262329) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 334223691 + ... + 334224111.

Almost surely, 2^140708262321 is an apocalyptic number.

140708262321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

140708262321 is the 375111-st square number.

140708262321 is the 187556-th centered octagonal number.

It is an amenable number.

140708262321 is a deficient number, since it is larger than the sum of its proper divisors (91826488218).

140708262321 is an frugal number, since it uses more digits than its factorization.

140708262321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

Multiplying 140708262321 by its sum of digits (36), we get a square (5065497443556 = 2250666²).

The spelling of 140708262321 in words is "one hundred forty billion, seven hundred eight million, two hundred sixty-two thousand, three hundred twenty-one".