30142872047 has 4 divisors (see below), whose sum is σ = 30181173816. Its totient is φ = 30104570280.

The previous prime is 30142872043. The next prime is 30142872059. The reversal of 30142872047 is 74027824103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74027824103 = 317 ⋅233526259.

It is a cyclic number.

It is not a de Polignac number, because 30142872047 - 2² = 30142872043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30142872047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30142872043) 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, 19149704 + ... + 19151277.

It is an arithmetic number, because the mean of its divisors is an integer number (7545293454).

Almost surely, 2^30142872047 is an apocalyptic number.

30142872047 is a deficient number, since it is larger than the sum of its proper divisors (38301769).

30142872047 is an equidigital number, since it uses as much as digits as its factorization.

30142872047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38301768.

The product of its (nonzero) digits is 75264, while the sum is 38.

The spelling of 30142872047 in words is "thirty billion, one hundred forty-two million, eight hundred seventy-two thousand, forty-seven".