120558638 has 4 divisors (see below), whose sum is σ = 180837960. Its totient is φ = 60279318.

The previous prime is 120558637. The next prime is 120558643. The reversal of 120558638 is 836855021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 836855021 = 109 ⋅7677569.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120558637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30139658 + ... + 30139661.

It is an arithmetic number, because the mean of its divisors is an integer number (45209490).

Almost surely, 2^120558638 is an apocalyptic number.

120558638 is a deficient number, since it is larger than the sum of its proper divisors (60279322).

120558638 is an equidigital number, since it uses as much as digits as its factorization.

120558638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60279321.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 120558638 is about 10979.9197629127. The cubic root of 120558638 is about 494.0066300803.

The spelling of 120558638 in words is "one hundred twenty million, five hundred fifty-eight thousand, six hundred thirty-eight".