30381842 has 4 divisors (see below), whose sum is σ = 45572766. Its totient is φ = 15190920.

The previous prime is 30381833. The next prime is 30381851. The reversal of 30381842 is 24818303.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (30381833) and next prime (30381851).

It can be written as a sum of positive squares in only one way, i.e., 30349081 + 32761 = 5509^2 + 181^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7595459 + ... + 7595462.

Almost surely, 2^30381842 is an apocalyptic number.

30381842 is a deficient number, since it is larger than the sum of its proper divisors (15190924).

30381842 is a wasteful number, since it uses less digits than its factorization.

30381842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15190923.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 30381842 is about 5511.9726051569. The cubic root of 30381842 is about 312.0359987501.

The spelling of 30381842 in words is "thirty million, three hundred eighty-one thousand, eight hundred forty-two".