140128454 has 8 divisors (see below), whose sum is σ = 210622248. Its totient is φ = 69921040.

The previous prime is 140128427. The next prime is 140128459. The reversal of 140128454 is 454821041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140128459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70367 + ... + 72330.

It is an arithmetic number, because the mean of its divisors is an integer number (26327781).

Almost surely, 2^140128454 is an apocalyptic number.

140128454 is a deficient number, since it is larger than the sum of its proper divisors (70493794).

140128454 is a wasteful number, since it uses less digits than its factorization.

140128454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143190.

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 140128454 is about 11837.5864938762. The cubic root of 140128454 is about 519.4081703625.

Adding to 140128454 its reverse (454821041), we get a palindrome (594949495).

The spelling of 140128454 in words is "one hundred forty million, one hundred twenty-eight thousand, four hundred fifty-four".