1680137242 has 8 divisors (see below), whose sum is σ = 2880235296. Its totient is φ = 720058812.

The previous prime is 1680137201. The next prime is 1680137269. The reversal of 1680137242 is 2427310861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1680137242² = 5645722303910733128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1680137198 and 1680137207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60004888 + ... + 60004915.

It is an arithmetic number, because the mean of its divisors is an integer number (360029412).

Almost surely, 2^1680137242 is an apocalyptic number.

1680137242 is a deficient number, since it is larger than the sum of its proper divisors (1200098054).

1680137242 is a wasteful number, since it uses less digits than its factorization.

1680137242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120009812.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 1680137242 is about 40989.4772106208. The cubic root of 1680137242 is about 1188.8167609306.

The spelling of 1680137242 in words is "one billion, six hundred eighty million, one hundred thirty-seven thousand, two hundred forty-two".