140556047 has 4 divisors (see below), whose sum is σ = 141074976. Its totient is φ = 140037120.

The previous prime is 140556043. The next prime is 140556061. The reversal of 140556047 is 740655041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140556047 - 2² = 140556043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140556043) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 259058 + ... + 259599.

It is an arithmetic number, because the mean of its divisors is an integer number (35268744).

Almost surely, 2^140556047 is an apocalyptic number.

140556047 is a deficient number, since it is larger than the sum of its proper divisors (518929).

140556047 is an equidigital number, since it uses as much as digits as its factorization.

140556047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518928.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 140556047 is about 11855.6335554031. The cubic root of 140556047 is about 519.9359474852.

It can be divided in two parts, 14055 and 6047, that added together give a palindrome (20102).

The spelling of 140556047 in words is "one hundred forty million, five hundred fifty-six thousand, forty-seven".