140321239 has 2 divisors, whose sum is σ = 140321240. Its totient is φ = 140321238.

The previous prime is 140321231. The next prime is 140321243. The reversal of 140321239 is 932123041.

140321239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140321239 - 2³ = 140321231 is a prime.

It is a super-2 number, since 2×140321239² = 39380100228990242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140321231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70160619 + 70160620.

It is an arithmetic number, because the mean of its divisors is an integer number (70160620).

Almost surely, 2^140321239 is an apocalyptic number.

140321239 is a deficient number, since it is larger than the sum of its proper divisors (1).

140321239 is an equidigital number, since it uses as much as digits as its factorization.

140321239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 140321239 is about 11845.7266134248. The cubic root of 140321239 is about 519.6462571934.

The spelling of 140321239 in words is "one hundred forty million, three hundred twenty-one thousand, two hundred thirty-nine".