140134023 has 32 divisors (see below), whose sum is σ = 213904320. Its totient is φ = 90616320.

The previous prime is 140134021. The next prime is 140134037. The reversal of 140134023 is 320431041.

It is not a de Polignac number, because 140134023 - 2¹ = 140134021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140133987 and 140134005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140134021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 306411 + ... + 306867.

It is an arithmetic number, because the mean of its divisors is an integer number (6684510).

Almost surely, 2^140134023 is an apocalyptic number.

140134023 is a deficient number, since it is larger than the sum of its proper divisors (73770297).

140134023 is a wasteful number, since it uses less digits than its factorization.

140134023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 140134023 is about 11837.8217168531. The cubic root of 140134023 is about 519.4150510630.

Adding to 140134023 its reverse (320431041), we get a palindrome (460565064).

The spelling of 140134023 in words is "one hundred forty million, one hundred thirty-four thousand, twenty-three".