172429120 has 28 divisors (see below), whose sum is σ = 410597604. Its totient is φ = 68971520.

The previous prime is 172429111. The next prime is 172429129. The reversal of 172429120 is 21924271.

It is an interprime number because it is at equal distance from previous prime (172429111) and next prime (172429129).

It can be written as a sum of positive squares in 2 ways, for example, as 88962624 + 83466496 = 9432^2 + 9136^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172429129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269101 + ... + 269740.

Almost surely, 2^172429120 is an apocalyptic number.

172429120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172429120 is an abundant number, since it is smaller than the sum of its proper divisors (238168484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172429120 is an equidigital number, since it uses as much as digits as its factorization.

172429120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538858 (or 538848 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 172429120 is about 13131.2269038350. The cubic root of 172429120 is about 556.5918856044.

It can be divided in two parts, 17242 and 9120, that added together give a palindrome (26362).

The spelling of 172429120 in words is "one hundred seventy-two million, four hundred twenty-nine thousand, one hundred twenty".