140678911 has 2 divisors, whose sum is σ = 140678912. Its totient is φ = 140678910.

The previous prime is 140678897. The next prime is 140678917. The reversal of 140678911 is 119876041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140678911 - 2²¹ = 138581759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140678917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70339455 + 70339456.

It is an arithmetic number, because the mean of its divisors is an integer number (70339456).

Almost surely, 2^140678911 is an apocalyptic number.

140678911 is a deficient number, since it is larger than the sum of its proper divisors (1).

140678911 is an equidigital number, since it uses as much as digits as its factorization.

140678911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 140678911 is about 11860.8140951623. The cubic root of 140678911 is about 520.0874002500.

The spelling of 140678911 in words is "one hundred forty million, six hundred seventy-eight thousand, nine hundred eleven".