30378042 has 12 divisors (see below), whose sum is σ = 65819130. Its totient is φ = 10126008.

The previous prime is 30378013. The next prime is 30378053. The reversal of 30378042 is 24087303.

It can be written as a sum of positive squares in only one way, i.e., 28611801 + 1766241 = 5349^2 + 1329^2 .

It is a super-3 number, since 3×30378042³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30377997 and 30378015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 843817 + ... + 843852.

Almost surely, 2^30378042 is an apocalyptic number.

30378042 is an abundant number, since it is smaller than the sum of its proper divisors (35441088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30378042 is a wasteful number, since it uses less digits than its factorization.

30378042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687677 (or 1687674 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 30378042 is about 5511.6278901972. The cubic root of 30378042 is about 312.0229889372.

The spelling of 30378042 in words is "thirty million, three hundred seventy-eight thousand, forty-two".