172012141 has 4 divisors (see below), whose sum is σ = 196585312. Its totient is φ = 147438972.

The previous prime is 172012123. The next prime is 172012153. The reversal of 172012141 is 141210271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 172012141 - 2¹¹ = 172010093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172052141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12286575 + ... + 12286588.

It is an arithmetic number, because the mean of its divisors is an integer number (49146328).

Almost surely, 2^172012141 is an apocalyptic number.

It is an amenable number.

172012141 is a deficient number, since it is larger than the sum of its proper divisors (24573171).

172012141 is an equidigital number, since it uses as much as digits as its factorization.

172012141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24573170.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 172012141 is about 13115.3399117217. The cubic root of 172012141 is about 556.1428615606.

It can be divided in two parts, 1720 and 12141, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 172012141 in words is "one hundred seventy-two million, twelve thousand, one hundred forty-one".