29292121 has 4 divisors (see below), whose sum is σ = 29582244. Its totient is φ = 29002000.

The previous prime is 29292113. The next prime is 29292149. The reversal of 29292121 is 12129292.

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 24403600 + 4888521 = 4940^2 + 2211^2 .

It is a cyclic number.

It is not a de Polignac number, because 29292121 - 2³ = 29292113 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29292121.

It is not an unprimeable number, because it can be changed into a prime (29292101) 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, 144910 + ... + 145111.

It is an arithmetic number, because the mean of its divisors is an integer number (7395561).

Almost surely, 2^29292121 is an apocalyptic number.

It is an amenable number.

29292121 is a deficient number, since it is larger than the sum of its proper divisors (290123).

29292121 is a wasteful number, since it uses less digits than its factorization.

29292121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290122.

The product of its digits is 1296, while the sum is 28.

The square root of 29292121 is about 5412.2196001271. The cubic root of 29292121 is about 308.2598337266.

It can be divided in two parts, 2929 and 2121, that added together give a triangular number (5050 = T₁₀₀).

The spelling of 29292121 in words is "twenty-nine million, two hundred ninety-two thousand, one hundred twenty-one".