30442129 has 2 divisors, whose sum is σ = 30442130. Its totient is φ = 30442128.

The previous prime is 30442103. The next prime is 30442177. The reversal of 30442129 is 92124403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26501904 + 3940225 = 5148^2 + 1985^2 .

It is a cyclic number.

It is not a de Polignac number, because 30442129 - 2⁷ = 30442001 is a prime.

It is not a weakly prime, because it can be changed into another prime (30442429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15221064 + 15221065.

It is an arithmetic number, because the mean of its divisors is an integer number (15221065).

Almost surely, 2^30442129 is an apocalyptic number.

It is an amenable number.

30442129 is a deficient number, since it is larger than the sum of its proper divisors (1).

30442129 is an equidigital number, since it uses as much as digits as its factorization.

30442129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 30442129 is about 5517.4386267543. The cubic root of 30442129 is about 312.2422544603.

The spelling of 30442129 in words is "thirty million, four hundred forty-two thousand, one hundred twenty-nine".