30129122 has 8 divisors (see below), whose sum is σ = 46046556. Its totient is φ = 14780272.

The previous prime is 30129109. The next prime is 30129133. The reversal of 30129122 is 22192103.

It is a Cunningham number, because it is equal to 5489²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 30129121 + 1 = 5489^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 30129094 and 30129103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142013 + ... + 142224.

Almost surely, 2^30129122 is an apocalyptic number.

30129122 is a deficient number, since it is larger than the sum of its proper divisors (15917434).

30129122 is a wasteful number, since it uses less digits than its factorization.

30129122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284292.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 30129122 is about 5489.0000910913. Note that the first 4 decimals coincide. The cubic root of 30129122 is about 311.1684037438.

The spelling of 30129122 in words is "thirty million, one hundred twenty-nine thousand, one hundred twenty-two".