140144458 has 4 divisors (see below), whose sum is σ = 210216690. Its totient is φ = 70072228.

The previous prime is 140144449. The next prime is 140144471. The reversal of 140144458 is 854441041.

140144458 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 99860049 + 40284409 = 9993^2 + 6347^2 .

It is a super-2 number, since 2×140144458² = 39280938216227528, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35036113 + ... + 35036116.

Almost surely, 2^140144458 is an apocalyptic number.

140144458 is a deficient number, since it is larger than the sum of its proper divisors (70072232).

140144458 is an equidigital number, since it uses as much as digits as its factorization.

140144458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70072231.

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 140144458 is about 11838.2624569655. The cubic root of 140144458 is about 519.4279433914.

Adding to 140144458 its reverse (854441041), we get a palindrome (994585499).

The spelling of 140144458 in words is "one hundred forty million, one hundred forty-four thousand, four hundred fifty-eight".