140496638 has 4 divisors (see below), whose sum is σ = 210744960. Its totient is φ = 70248318.

The previous prime is 140496611. The next prime is 140496647. The reversal of 140496638 is 836694041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 836694041 = 1381 ⋅605861.

It is a junction number, because it is equal to n+sod(n) for n = 140496595 and 140496604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35124158 + ... + 35124161.

It is an arithmetic number, because the mean of its divisors is an integer number (52686240).

Almost surely, 2^140496638 is an apocalyptic number.

140496638 is a deficient number, since it is larger than the sum of its proper divisors (70248322).

140496638 is an equidigital number, since it uses as much as digits as its factorization.

140496638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70248321.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 140496638 is about 11853.1277728708. The cubic root of 140496638 is about 519.8626831698.

The spelling of 140496638 in words is "one hundred forty million, four hundred ninety-six thousand, six hundred thirty-eight".