140464123 has 4 divisors (see below), whose sum is σ = 140574888. Its totient is φ = 140353360.

The previous prime is 140464117. The next prime is 140464127. The reversal of 140464123 is 321464041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321464041 = 73 ⋅4403617.

It is a cyclic number.

It is not a de Polignac number, because 140464123 - 2⁹ = 140463611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140464127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53458 + ... + 56023.

It is an arithmetic number, because the mean of its divisors is an integer number (35143722).

Almost surely, 2^140464123 is an apocalyptic number.

140464123 is a deficient number, since it is larger than the sum of its proper divisors (110765).

140464123 is a wasteful number, since it uses less digits than its factorization.

140464123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110764.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 140464123 is about 11851.7561146018. The cubic root of 140464123 is about 519.8225763043.

The spelling of 140464123 in words is "one hundred forty million, four hundred sixty-four thousand, one hundred twenty-three".