140504123 has 4 divisors (see below), whose sum is σ = 141000888. Its totient is φ = 140007360.

The previous prime is 140504093. The next prime is 140504131. The reversal of 140504123 is 321405041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321405041 = 5507 ⋅58363.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140504123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140504095 and 140504104.

It is not an unprimeable number, because it can be changed into a prime (140503123) 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 3 ways as a sum of consecutive naturals, for example, 247958 + ... + 248523.

It is an arithmetic number, because the mean of its divisors is an integer number (35250222).

Almost surely, 2^140504123 is an apocalyptic number.

140504123 is a deficient number, since it is larger than the sum of its proper divisors (496765).

140504123 is an equidigital number, since it uses as much as digits as its factorization.

140504123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496764.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 140504123 is about 11853.4435081119. The cubic root of 140504123 is about 519.8719149520.

Adding to 140504123 its reverse (321405041), we get a palindrome (461909164).

The spelling of 140504123 in words is "one hundred forty million, five hundred four thousand, one hundred twenty-three".