30129137 has 8 divisors (see below), whose sum is σ = 31699752. Its totient is φ = 28598400.

The previous prime is 30129133. The next prime is 30129157. The reversal of 30129137 is 73192103.

It can be written as a sum of positive squares in 4 ways, for example, as 16 + 30129121 = 4^2 + 5489^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 30129137 - 2² = 30129133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30129133) 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 7 ways as a sum of consecutive naturals, for example, 8414 + ... + 11447.

It is an arithmetic number, because the mean of its divisors is an integer number (3962469).

Almost surely, 2^30129137 is an apocalyptic number.

30129137 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

30129137 is a deficient number, since it is larger than the sum of its proper divisors (1570615).

30129137 is a wasteful number, since it uses less digits than its factorization.

30129137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19939.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 30129137 is about 5489.0014574602. The cubic root of 30129137 is about 311.1684553829.

The spelling of 30129137 in words is "thirty million, one hundred twenty-nine thousand, one hundred thirty-seven".