140420608 has 20 divisors (see below), whose sum is σ = 280567980. Its totient is φ = 70210048.

The previous prime is 140420591. The next prime is 140420617. The reversal of 140420608 is 806024041.

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, 136618 + ... + 137641.

It is an arithmetic number, because the mean of its divisors is an integer number (14028399).

Almost surely, 2^140420608 is an apocalyptic number.

It is an amenable number.

140420608 is a deficient number, since it is larger than the sum of its proper divisors (140147372).

140420608 is an frugal number, since it uses more digits than its factorization.

140420608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274277 (or 274261 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 140420608 is about 11849.9201685075. The cubic root of 140420608 is about 519.7688913842.

Adding to 140420608 its reverse (806024041), we get a palindrome (946444649).

The spelling of 140420608 in words is "one hundred forty million, four hundred twenty thousand, six hundred eight".