140629705 has 16 divisors (see below), whose sum is σ = 178988544. Its totient is φ = 105842880.

The previous prime is 140629693. The next prime is 140629721. The reversal of 140629705 is 507926041.

It is not a de Polignac number, because 140629705 - 2¹¹ = 140627657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3009 + ... + 17038.

It is an arithmetic number, because the mean of its divisors is an integer number (11186784).

Almost surely, 2^140629705 is an apocalyptic number.

It is an amenable number.

140629705 is a deficient number, since it is larger than the sum of its proper divisors (38358839).

140629705 is a wasteful number, since it uses less digits than its factorization.

140629705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20136.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 140629705 is about 11858.7396041907. The cubic root of 140629705 is about 520.0267552802.

It can be divided in two parts, 1406 and 29705, that multiplied together give a triangular number (41765230 = T₉₁₃₉).

The spelling of 140629705 in words is "one hundred forty million, six hundred twenty-nine thousand, seven hundred five".