140020426 has 32 divisors (see below), whose sum is σ = 264015360. Its totient is φ = 54210816.

The previous prime is 140020417. The next prime is 140020429. The reversal of 140020426 is 624020041.

It is not an unprimeable number, because it can be changed into a prime (140020429) 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 15 ways as a sum of consecutive naturals, for example, 370 + ... + 16738.

It is an arithmetic number, because the mean of its divisors is an integer number (8250480).

Almost surely, 2^140020426 is an apocalyptic number.

140020426 is a deficient number, since it is larger than the sum of its proper divisors (123994934).

140020426 is a wasteful number, since it uses less digits than its factorization.

140020426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16438.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 140020426 is about 11833.0226907583. The cubic root of 140020426 is about 519.2746617867.

Adding to 140020426 its reverse (624020041), we get a palindrome (764040467).

The spelling of 140020426 in words is "one hundred forty million, twenty thousand, four hundred twenty-six".