140249658 has 16 divisors (see below), whose sum is σ = 280931616. Its totient is φ = 46677840.

The previous prime is 140249651. The next prime is 140249663. The reversal of 140249658 is 856942041.

It is not an unprimeable number, because it can be changed into a prime (140249651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13716 + ... + 21647.

It is an arithmetic number, because the mean of its divisors is an integer number (17558226).

Almost surely, 2^140249658 is an apocalyptic number.

140249658 is an abundant number, since it is smaller than the sum of its proper divisors (140681958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140249658 is a wasteful number, since it uses less digits than its factorization.

140249658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36029.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 140249658 is about 11842.7048430669. The cubic root of 140249658 is about 519.5578811077.

The spelling of 140249658 in words is "one hundred forty million, two hundred forty-nine thousand, six hundred fifty-eight".