140305427 has 2 divisors, whose sum is σ = 140305428. Its totient is φ = 140305426.

The previous prime is 140305397. The next prime is 140305493. The reversal of 140305427 is 724503041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140305427 - 2⁸ = 140305171 is a prime.

It is a super-2 number, since 2×140305427² = 39371225691304658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140305396 and 140305405.

It is not a weakly prime, because it can be changed into another prime (140505427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70152713 + 70152714.

It is an arithmetic number, because the mean of its divisors is an integer number (70152714).

Almost surely, 2^140305427 is an apocalyptic number.

140305427 is a deficient number, since it is larger than the sum of its proper divisors (1).

140305427 is an equidigital number, since it uses as much as digits as its factorization.

140305427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 140305427 is about 11845.0591809412. The cubic root of 140305427 is about 519.6267378027.

Adding to 140305427 its reverse (724503041), we get a palindrome (864808468).

The spelling of 140305427 in words is "one hundred forty million, three hundred five thousand, four hundred twenty-seven".