140420634 has 8 divisors (see below), whose sum is σ = 280841280. Its totient is φ = 46806876.

The previous prime is 140420627. The next prime is 140420713. The reversal of 140420634 is 436024041.

It is a sphenic number, since it is the product of 3 distinct primes.

140420634 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11701714 + ... + 11701725.

It is an arithmetic number, because the mean of its divisors is an integer number (35105160).

Almost surely, 2^140420634 is an apocalyptic number.

140420634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140420634 is a wasteful number, since it uses less digits than its factorization.

140420634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23403444.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 140420634 is about 11849.9212655612. The cubic root of 140420634 is about 519.7689234640.

Adding to 140420634 its reverse (436024041), we get a palindrome (576444675).

The spelling of 140420634 in words is "one hundred forty million, four hundred twenty thousand, six hundred thirty-four".