120138061 has 4 divisors (see below), whose sum is σ = 120760732. Its totient is φ = 119515392.

The previous prime is 120138059. The next prime is 120138079. The reversal of 120138061 is 160831021.

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 61921161 + 58216900 = 7869^2 + 7630^2 .

It is a cyclic number.

It is not a de Polignac number, because 120138061 - 2¹ = 120138059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120130061) 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, 311046 + ... + 311431.

It is an arithmetic number, because the mean of its divisors is an integer number (30190183).

Almost surely, 2^120138061 is an apocalyptic number.

It is an amenable number.

120138061 is a deficient number, since it is larger than the sum of its proper divisors (622671).

120138061 is an equidigital number, since it uses as much as digits as its factorization.

120138061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622670.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 120138061 is about 10960.7509323039. The cubic root of 120138061 is about 493.4315022053.

Adding to 120138061 its reverse (160831021), we get a palindrome (280969082).

The spelling of 120138061 in words is "one hundred twenty million, one hundred thirty-eight thousand, sixty-one".