140643254 has 4 divisors (see below), whose sum is σ = 210964884. Its totient is φ = 70321626.

The previous prime is 140643233. The next prime is 140643277. The reversal of 140643254 is 452346041.

140643254 is digitally balanced in base 3, 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 is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35160812 + ... + 35160815.

It is an arithmetic number, because the mean of its divisors is an integer number (52741221).

Almost surely, 2^140643254 is an apocalyptic number.

140643254 is a deficient number, since it is larger than the sum of its proper divisors (70321630).

140643254 is an equidigital number, since it uses as much as digits as its factorization.

140643254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70321629.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 140643254 is about 11859.3108568753. The cubic root of 140643254 is about 520.0434554414.

Adding to 140643254 its reverse (452346041), we get a palindrome (592989295).

The spelling of 140643254 in words is "one hundred forty million, six hundred forty-three thousand, two hundred fifty-four".