30155042 has 8 divisors (see below), whose sum is σ = 47893356. Its totient is φ = 14190592.

The previous prime is 30155017. The next prime is 30155053. The reversal of 30155042 is 24055103.

It can be written as a sum of positive squares in 2 ways, for example, as 30129121 + 25921 = 5489^2 + 161^2 .

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

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, 443423 + ... + 443490.

Almost surely, 2^30155042 is an apocalyptic number.

30155042 is a deficient number, since it is larger than the sum of its proper divisors (17738314).

30155042 is a wasteful number, since it uses less digits than its factorization.

30155042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886932.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 30155042 is about 5491.3606692695. The cubic root of 30155042 is about 311.2576106051.

The spelling of 30155042 in words is "thirty million, one hundred fifty-five thousand, forty-two".