30642240439 has 16 divisors (see below), whose sum is σ = 31778196480. Its totient is φ = 29515752000.

The previous prime is 30642240403. The next prime is 30642240451. The reversal of 30642240439 is 93404224603.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30642240439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30642240398 and 30642240407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30642340439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12708144 + ... + 12710554.

It is an arithmetic number, because the mean of its divisors is an integer number (1986137280).

Almost surely, 2^30642240439 is an apocalyptic number.

30642240439 is a deficient number, since it is larger than the sum of its proper divisors (1135956041).

30642240439 is a wasteful number, since it uses less digits than its factorization.

30642240439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4182.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 30642240439 in words is "thirty billion, six hundred forty-two million, two hundred forty thousand, four hundred thirty-nine".