140105629 has 2 divisors, whose sum is σ = 140105630. Its totient is φ = 140105628.

The previous prime is 140105599. The next prime is 140105633. The reversal of 140105629 is 926501041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80460900 + 59644729 = 8970^2 + 7723^2 .

It is a cyclic number.

It is not a de Polignac number, because 140105629 - 2¹¹ = 140103581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140105597 and 140105606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140100629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70052814 + 70052815.

It is an arithmetic number, because the mean of its divisors is an integer number (70052815).

Almost surely, 2^140105629 is an apocalyptic number.

It is an amenable number.

140105629 is a deficient number, since it is larger than the sum of its proper divisors (1).

140105629 is an equidigital number, since it uses as much as digits as its factorization.

140105629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 140105629 is about 11836.6223645092. The cubic root of 140105629 is about 519.3799673462.

It can be divided in two parts, 14010562 and 9, that added together give a triangular number (14010571 = T₅₂₉₃).

The spelling of 140105629 in words is "one hundred forty million, one hundred five thousand, six hundred twenty-nine".