30725029242 has 64 divisors (see below), whose sum is σ = 69945431040. Its totient is φ = 9994401648.

The previous prime is 30725029241. The next prime is 30725029267. The reversal of 30725029242 is 24292052703.

30725029242 is a `hidden beast` number, since 307 + 25 + 0 + 292 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 30725029197 and 30725029206.

It is not an unprimeable number, because it can be changed into a prime (30725029241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 347443 + ... + 426809.

It is an arithmetic number, because the mean of its divisors is an integer number (1092897360).

Almost surely, 2^30725029242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30725029242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34972715520).

30725029242 is an abundant number, since it is smaller than the sum of its proper divisors (39220401798).

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

30725029242 is a wasteful number, since it uses less digits than its factorization.

30725029242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79552 (or 79546 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 30725029242 in words is "thirty billion, seven hundred twenty-five million, twenty-nine thousand, two hundred forty-two".