120040635 has 64 divisors (see below), whose sum is σ = 227598336. Its totient is φ = 53260800.

The previous prime is 120040607. The next prime is 120040637. The reversal of 120040635 is 536040021.

It is a happy number.

It is not a de Polignac number, because 120040635 - 2¹⁶ = 119975099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120040637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 409549 + ... + 409841.

It is an arithmetic number, because the mean of its divisors is an integer number (3556224).

Almost surely, 2^120040635 is an apocalyptic number.

120040635 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120040635 is a deficient number, since it is larger than the sum of its proper divisors (107557701).

120040635 is a wasteful number, since it uses less digits than its factorization.

120040635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 120040635 is about 10956.3057186261. The cubic root of 120040635 is about 493.2980833206.

Adding to 120040635 its reverse (536040021), we get a palindrome (656080656).

The spelling of 120040635 in words is "one hundred twenty million, forty thousand, six hundred thirty-five".