120720151 has 2 divisors, whose sum is σ = 120720152. Its totient is φ = 120720150.

The previous prime is 120720143. The next prime is 120720161. The reversal of 120720151 is 151027021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120720151 - 2³ = 120720143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120720101) 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 as a sum of consecutive naturals, namely, 60360075 + 60360076.

It is an arithmetic number, because the mean of its divisors is an integer number (60360076).

Almost surely, 2^120720151 is an apocalyptic number.

120720151 is a deficient number, since it is larger than the sum of its proper divisors (1).

120720151 is an equidigital number, since it uses as much as digits as its factorization.

120720151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 120720151 is about 10987.2722274457. The cubic root of 120720151 is about 494.2271393408.

Adding to 120720151 its reverse (151027021), we get a palindrome (271747172).

The spelling of 120720151 in words is "one hundred twenty million, seven hundred twenty thousand, one hundred fifty-one".