12247142340 has 24 divisors (see below), whose sum is σ = 34291998720. Its totient is φ = 3265904608.

The previous prime is 12247142293. The next prime is 12247142351. The reversal of 12247142340 is 4324174221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 12247142298 and 12247142307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102059460 + ... + 102059579.

It is an arithmetic number, because the mean of its divisors is an integer number (1428833280).

Almost surely, 2^12247142340 is an apocalyptic number.

12247142340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12247142340 is an abundant number, since it is smaller than the sum of its proper divisors (22044856380).

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

12247142340 is a wasteful number, since it uses less digits than its factorization.

12247142340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204119051 (or 204119049 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The spelling of 12247142340 in words is "twelve billion, two hundred forty-seven million, one hundred forty-two thousand, three hundred forty".