140420633 has 4 divisors (see below), whose sum is σ = 140553060. Its totient is φ = 140288208.

The previous prime is 140420627. The next prime is 140420713. The reversal of 140420633 is 336024041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49942489 + 90478144 = 7067^2 + 9512^2 .

It is a cyclic number.

It is not a de Polignac number, because 140420633 - 2⁴ = 140420617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140420599 and 140420608.

It is not an unprimeable number, because it can be changed into a prime (140420333) by changing a digit.

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, 64610 + ... + 66747.

It is an arithmetic number, because the mean of its divisors is an integer number (35138265).

Almost surely, 2^140420633 is an apocalyptic number.

It is an amenable number.

140420633 is a deficient number, since it is larger than the sum of its proper divisors (132427).

140420633 is a wasteful number, since it uses less digits than its factorization.

140420633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132426.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 140420633 is about 11849.9212233668. The cubic root of 140420633 is about 519.7689222302.

Adding to 140420633 its reverse (336024041), we get a palindrome (476444674).

The spelling of 140420633 in words is "one hundred forty million, four hundred twenty thousand, six hundred thirty-three".