140120321 has 4 divisors (see below), whose sum is σ = 152858544. Its totient is φ = 127382100.

The previous prime is 140120317. The next prime is 140120327. The reversal of 140120321 is 123021041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140120321 - 2² = 140120317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140120296 and 140120305.

It is not an unprimeable number, because it can be changed into a prime (140120327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6369095 + ... + 6369116.

It is an arithmetic number, because the mean of its divisors is an integer number (38214636).

Almost surely, 2^140120321 is an apocalyptic number.

140120321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140120321 is a deficient number, since it is larger than the sum of its proper divisors (12738223).

140120321 is a wasteful number, since it uses less digits than its factorization.

140120321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12738222.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 140120321 is about 11837.2429644745. The cubic root of 140120321 is about 519.3981214199.

Adding to 140120321 its reverse (123021041), we get a palindrome (263141362).

The spelling of 140120321 in words is "one hundred forty million, one hundred twenty thousand, three hundred twenty-one".