140321755 has 8 divisors (see below), whose sum is σ = 192441312. Its totient is φ = 96220608.

The previous prime is 140321747. The next prime is 140321759. The reversal of 140321755 is 557123041.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140321755 - 2³ = 140321747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140321759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2004562 + ... + 2004631.

It is an arithmetic number, because the mean of its divisors is an integer number (24055164).

Almost surely, 2^140321755 is an apocalyptic number.

140321755 is a deficient number, since it is larger than the sum of its proper divisors (52119557).

140321755 is an equidigital number, since it uses as much as digits as its factorization.

140321755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4009205.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 140321755 is about 11845.7483934110. The cubic root of 140321755 is about 519.6468941536.

Adding to 140321755 its reverse (557123041), we get a palindrome (697444796).

The spelling of 140321755 in words is "one hundred forty million, three hundred twenty-one thousand, seven hundred fifty-five".