29742481 has 2 divisors, whose sum is σ = 29742482. Its totient is φ = 29742480.

The previous prime is 29742457. The next prime is 29742491. The reversal of 29742481 is 18424792.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24059025 + 5683456 = 4905^2 + 2384^2 .

It is a cyclic number.

It is not a de Polignac number, because 29742481 - 2¹⁹ = 29218193 is a prime.

It is a super-2 number, since 2×29742481² = 1769230352070722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 29742481.

It is not a weakly prime, because it can be changed into another prime (29742421) 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, 14871240 + 14871241.

It is an arithmetic number, because the mean of its divisors is an integer number (14871241).

Almost surely, 2^29742481 is an apocalyptic number.

It is an amenable number.

29742481 is a deficient number, since it is larger than the sum of its proper divisors (1).

29742481 is an equidigital number, since it uses as much as digits as its factorization.

29742481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 37.

The square root of 29742481 is about 5453.6667481613. Note that the first 3 decimals coincide. The cubic root of 29742481 is about 309.8316151094.

It can be divided in two parts, 297 and 42481, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 29742481 in words is "twenty-nine million, seven hundred forty-two thousand, four hundred eighty-one".