30001243140 has 72 divisors (see below), whose sum is σ = 99276847488. Its totient is φ = 7273028160.

The previous prime is 30001243127. The next prime is 30001243157. The reversal of 30001243140 is 4134210003.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7574092 + ... + 7578051.

It is an arithmetic number, because the mean of its divisors is an integer number (1378845104).

Almost surely, 2^30001243140 is an apocalyptic number.

30001243140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30001243140 is an abundant number, since it is smaller than the sum of its proper divisors (69275604348).

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

30001243140 is a wasteful number, since it uses less digits than its factorization.

30001243140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15152169 (or 15152164 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 30001243140 its reverse (4134210003), we get a palindrome (34135453143).

The spelling of 30001243140 in words is "thirty billion, one million, two hundred forty-three thousand, one hundred forty".