30285731742 has 64 divisors (see below), whose sum is σ = 71632512000. Its totient is φ = 8531150880.

The previous prime is 30285731731. The next prime is 30285731743. The reversal of 30285731742 is 24713758203.

It is a happy number.

It is a super-3 number, since 3×30285731742³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 30285731694 and 30285731703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30285731743) 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, 42484 + ... + 249752.

It is an arithmetic number, because the mean of its divisors is an integer number (1119258000).

Almost surely, 2^30285731742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30285731742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35816256000).

30285731742 is an abundant number, since it is smaller than the sum of its proper divisors (41346780258).

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

30285731742 is a wasteful number, since it uses less digits than its factorization.

30285731742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207366 (or 207352 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

The spelling of 30285731742 in words is "thirty billion, two hundred eighty-five million, seven hundred thirty-one thousand, seven hundred forty-two".