140203645642 has 16 divisors (see below), whose sum is σ = 213686811072. Its totient is φ = 68977085760.

The previous prime is 140203645639. The next prime is 140203645649. The reversal of 140203645642 is 246546302041.

It is not an unprimeable number, because it can be changed into a prime (140203645649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475758 + ... + 711865.

It is an arithmetic number, because the mean of its divisors is an integer number (13355425692).

Almost surely, 2^140203645642 is an apocalyptic number.

140203645642 is a deficient number, since it is larger than the sum of its proper divisors (73483165430).

140203645642 is a wasteful number, since it uses less digits than its factorization.

140203645642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188573.

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 140203645642 its reverse (246546302041), we get a palindrome (386749947683).

The spelling of 140203645642 in words is "one hundred forty billion, two hundred three million, six hundred forty-five thousand, six hundred forty-two".