29042161 has 4 divisors (see below), whose sum is σ = 29518324. Its totient is φ = 28566000.

The previous prime is 29042131. The next prime is 29042173. The reversal of 29042161 is 16124092.

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 17098225 + 11943936 = 4135^2 + 3456^2 .

It is a cyclic number.

It is not a de Polignac number, because 29042161 - 2⁵ = 29042129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29042131) 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, 237990 + ... + 238111.

It is an arithmetic number, because the mean of its divisors is an integer number (7379581).

Almost surely, 2^29042161 is an apocalyptic number.

It is an amenable number.

29042161 is a deficient number, since it is larger than the sum of its proper divisors (476163).

29042161 is an equidigital number, since it uses as much as digits as its factorization.

29042161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476162.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 29042161 is about 5389.0779359738. The cubic root of 29042161 is about 307.3804977731.

It can be divided in two parts, 290421 and 61, that multiplied together give a square (17715681 = 4209²).

The spelling of 29042161 in words is "twenty-nine million, forty-two thousand, one hundred sixty-one".