29123641 has 2 divisors, whose sum is σ = 29123642. Its totient is φ = 29123640.

The previous prime is 29123629. The next prime is 29123651. The reversal of 29123641 is 14632192.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22127616 + 6996025 = 4704^2 + 2645^2 .

It is a cyclic number.

It is not a de Polignac number, because 29123641 - 2⁵ = 29123609 is a prime.

It is not a weakly prime, because it can be changed into another prime (29123651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14561820 + 14561821.

It is an arithmetic number, because the mean of its divisors is an integer number (14561821).

Almost surely, 2^29123641 is an apocalyptic number.

It is an amenable number.

29123641 is a deficient number, since it is larger than the sum of its proper divisors (1).

29123641 is an equidigital number, since it uses as much as digits as its factorization.

29123641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 29123641 is about 5396.6323758433. The cubic root of 29123641 is about 307.6676891794.

It can be divided in two parts, 291 and 23641, that added together give a palindrome (23932).

The spelling of 29123641 in words is "twenty-nine million, one hundred twenty-three thousand, six hundred forty-one".