29707121 has 2 divisors, whose sum is σ = 29707122. Its totient is φ = 29707120.

The previous prime is 29707103. The next prime is 29707133. The reversal of 29707121 is 12170792.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25959025 + 3748096 = 5095^2 + 1936^2 .

It is a cyclic number.

It is not a de Polignac number, because 29707121 - 2⁶ = 29707057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (29707141) 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, 14853560 + 14853561.

It is an arithmetic number, because the mean of its divisors is an integer number (14853561).

Almost surely, 2^29707121 is an apocalyptic number.

It is an amenable number.

29707121 is a deficient number, since it is larger than the sum of its proper divisors (1).

29707121 is an equidigital number, since it uses as much as digits as its factorization.

29707121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 29707121 is about 5450.4239284665. The cubic root of 29707121 is about 309.7087830520.

The spelling of 29707121 in words is "twenty-nine million, seven hundred seven thousand, one hundred twenty-one".