30105372742 has 4 divisors (see below), whose sum is σ = 45158059116. Its totient is φ = 15052686370.

The previous prime is 30105372637. The next prime is 30105372763. The reversal of 30105372742 is 24727350103.

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

It is a junction number, because it is equal to n+sod(n) for n = 30105372698 and 30105372707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7526343184 + ... + 7526343187.

It is an arithmetic number, because the mean of its divisors is an integer number (11289514779).

Almost surely, 2^30105372742 is an apocalyptic number.

30105372742 is a deficient number, since it is larger than the sum of its proper divisors (15052686374).

30105372742 is a wasteful number, since it uses less digits than its factorization.

30105372742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15052686373.

The product of its (nonzero) digits is 35280, while the sum is 34.

The spelling of 30105372742 in words is "thirty billion, one hundred five million, three hundred seventy-two thousand, seven hundred forty-two".