124211161 has 4 divisors (see below), whose sum is σ = 124342452. Its totient is φ = 124079872.

The previous prime is 124211149. The next prime is 124211239. The reversal of 124211161 is 161112421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 101123136 + 23088025 = 10056^2 + 4805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124211161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124211111) 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, 64216 + ... + 66121.

It is an arithmetic number, because the mean of its divisors is an integer number (31085613).

Almost surely, 2^124211161 is an apocalyptic number.

It is an amenable number.

124211161 is a deficient number, since it is larger than the sum of its proper divisors (131291).

124211161 is an equidigital number, since it uses as much as digits as its factorization.

124211161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131290.

The product of its digits is 96, while the sum is 19.

The square root of 124211161 is about 11145.0061013891. The cubic root of 124211161 is about 498.9459943722.

Adding to 124211161 its reverse (161112421), we get a palindrome (285323582).

It can be divided in two parts, 1242 and 11161, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 124211161 in words is "one hundred twenty-four million, two hundred eleven thousand, one hundred sixty-one".