30305542140 has 36 divisors (see below), whose sum is σ = 91926811704. Its totient is φ = 8081477856.

The previous prime is 30305542129. The next prime is 30305542151. The reversal of 30305542140 is 4124550303.

It is an interprime number because it is at equal distance from previous prime (30305542129) and next prime (30305542151).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84181882 + ... + 84182241.

Almost surely, 2^30305542140 is an apocalyptic number.

30305542140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30305542140 is an abundant number, since it is smaller than the sum of its proper divisors (61621269564).

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

30305542140 is a wasteful number, since it uses less digits than its factorization.

30305542140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168364138 (or 168364133 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The spelling of 30305542140 in words is "thirty billion, three hundred five million, five hundred forty-two thousand, one hundred forty".