30478138242 has 32 divisors (see below), whose sum is σ = 62625591744. Its totient is φ = 9881352000.

The previous prime is 30478138193. The next prime is 30478138253. The reversal of 30478138242 is 24283187403.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30478138194 and 30478138203.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 657117 + ... + 701967.

It is an arithmetic number, because the mean of its divisors is an integer number (1957049742).

Almost surely, 2^30478138242 is an apocalyptic number.

30478138242 is an abundant number, since it is smaller than the sum of its proper divisors (32147453502).

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

30478138242 is a wasteful number, since it uses less digits than its factorization.

30478138242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47954.

The product of its (nonzero) digits is 258048, while the sum is 42.

The spelling of 30478138242 in words is "thirty billion, four hundred seventy-eight million, one hundred thirty-eight thousand, two hundred forty-two".