120829155 has 16 divisors (see below), whose sum is σ = 193484544. Its totient is φ = 64389600.

The previous prime is 120829153. The next prime is 120829169. The reversal of 120829155 is 551928021.

It is not a de Polignac number, because 120829155 - 2¹ = 120829153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120829153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21930 + ... + 26880.

It is an arithmetic number, because the mean of its divisors is an integer number (12092784).

Almost surely, 2^120829155 is an apocalyptic number.

120829155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120829155 is a deficient number, since it is larger than the sum of its proper divisors (72655389).

120829155 is a wasteful number, since it uses less digits than its factorization.

120829155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6586.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 120829155 is about 10992.2315750716. The cubic root of 120829155 is about 494.3758483675.

The spelling of 120829155 in words is "one hundred twenty million, eight hundred twenty-nine thousand, one hundred fifty-five".