161741434 has 8 divisors (see below), whose sum is σ = 256883508. Its totient is φ = 76113600.

The previous prime is 161741431. The next prime is 161741443. The reversal of 161741434 is 434147161.

It can be written as a sum of positive squares in 2 ways, for example, as 153636025 + 8105409 = 12395^2 + 2847^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 161741396 and 161741405.

It is not an unprimeable number, because it can be changed into a prime (161741431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2378517 + ... + 2378584.

Almost surely, 2^161741434 is an apocalyptic number.

161741434 is a deficient number, since it is larger than the sum of its proper divisors (95142074).

161741434 is a wasteful number, since it uses less digits than its factorization.

161741434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4757120.

The product of its digits is 8064, while the sum is 31.

The square root of 161741434 is about 12717.7605733085. The cubic root of 161741434 is about 544.8459952592.

Adding to 161741434 its reverse (434147161), we get a palindrome (595888595).

The spelling of 161741434 in words is "one hundred sixty-one million, seven hundred forty-one thousand, four hundred thirty-four".