30105149 has 4 divisors (see below), whose sum is σ = 30397536. Its totient is φ = 29812764.

The previous prime is 30105109. The next prime is 30105151. The reversal of 30105149 is 94150103.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30105149 - 2²⁴ = 13327933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30105109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146039 + ... + 146244.

It is an arithmetic number, because the mean of its divisors is an integer number (7599384).

Almost surely, 2^30105149 is an apocalyptic number.

It is an amenable number.

30105149 is a deficient number, since it is larger than the sum of its proper divisors (292387).

30105149 is a wasteful number, since it uses less digits than its factorization.

30105149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292386.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 30105149 is about 5486.8159254708. The cubic root of 30105149 is about 311.0858521679.

The spelling of 30105149 in words is "thirty million, one hundred five thousand, one hundred forty-nine".