120151515 has 16 divisors (see below), whose sum is σ = 209719296. Its totient is φ = 58255200.

The previous prime is 120151489. The next prime is 120151523. The reversal of 120151515 is 515151021.

It is not a de Polignac number, because 120151515 - 2⁵ = 120151483 is a prime.

120151515 is a modest number, since divided by 151515 gives 120 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 120151491 and 120151500.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 363931 + ... + 364260.

It is an arithmetic number, because the mean of its divisors is an integer number (13107456).

Almost surely, 2^120151515 is an apocalyptic number.

120151515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120151515 is a deficient number, since it is larger than the sum of its proper divisors (89567781).

120151515 is a wasteful number, since it uses less digits than its factorization.

120151515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728210.

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 120151515 is about 10961.3646504438. The cubic root of 120151515 is about 493.4499209578.

It can be divided in two parts, 12015 and 1515, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 120151515 in words is "one hundred twenty million, one hundred fifty-one thousand, five hundred fifteen".