140128633 has 4 divisors (see below), whose sum is σ = 140169600. Its totient is φ = 140087668.

The previous prime is 140128621. The next prime is 140128643. The reversal of 140128633 is 336821041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140128633 - 2¹³ = 140120441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140128613) 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, 14833 + ... + 22366.

It is an arithmetic number, because the mean of its divisors is an integer number (35042400).

Almost surely, 2^140128633 is an apocalyptic number.

It is an amenable number.

140128633 is a deficient number, since it is larger than the sum of its proper divisors (40967).

140128633 is an equidigital number, since it uses as much as digits as its factorization.

140128633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40966.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 140128633 is about 11837.5940545366. The cubic root of 140128633 is about 519.4083915263.

Adding to 140128633 its reverse (336821041), we get a palindrome (476949674).

The spelling of 140128633 in words is "one hundred forty million, one hundred twenty-eight thousand, six hundred thirty-three".