172034121 has 16 divisors (see below), whose sum is σ = 262338944. Its totient is φ = 98233344.

The previous prime is 172034111. The next prime is 172034129. The reversal of 172034121 is 121430271.

It is not a de Polignac number, because 172034121 - 2¹¹ = 172032073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (172034129) 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, 42435 + ... + 46311.

It is an arithmetic number, because the mean of its divisors is an integer number (16396184).

Almost surely, 2^172034121 is an apocalyptic number.

It is an amenable number.

172034121 is a deficient number, since it is larger than the sum of its proper divisors (90304823).

172034121 is a wasteful number, since it uses less digits than its factorization.

172034121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6000.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 172034121 is about 13116.1778350250. The cubic root of 172034121 is about 556.1665488410.

Adding to 172034121 its reverse (121430271), we get a palindrome (293464392).

The spelling of 172034121 in words is "one hundred seventy-two million, thirty-four thousand, one hundred twenty-one".