140023450 has 24 divisors (see below), whose sum is σ = 297650592. Its totient is φ = 48007920.

The previous prime is 140023427. The next prime is 140023459. The reversal of 140023450 is 54320041.

It is not an unprimeable number, because it can be changed into a prime (140023459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199684 + ... + 200383.

It is an arithmetic number, because the mean of its divisors is an integer number (12402108).

Almost surely, 2^140023450 is an apocalyptic number.

140023450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140023450 is an abundant number, since it is smaller than the sum of its proper divisors (157627142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140023450 is a wasteful number, since it uses less digits than its factorization.

140023450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400086 (or 400081 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 140023450 is about 11833.1504680706. The cubic root of 140023450 is about 519.2783999920.

Adding to 140023450 its reverse (54320041), we get a palindrome (194343491).

The spelling of 140023450 in words is "one hundred forty million, twenty-three thousand, four hundred fifty".