1305180242 has 8 divisors (see below), whose sum is σ = 1957925196. Its totient is φ = 652538512.

The previous prime is 1305180223. The next prime is 1305180263. The reversal of 1305180242 is 2420815031.

It can be written as a sum of positive squares in 2 ways, for example, as 1259469121 + 45711121 = 35489^2 + 6761^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29588 + ... + 59040.

Almost surely, 2^1305180242 is an apocalyptic number.

1305180242 is a deficient number, since it is larger than the sum of its proper divisors (652744954).

1305180242 is a wasteful number, since it uses less digits than its factorization.

1305180242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51612.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1305180242 is about 36127.2783641392. The cubic root of 1305180242 is about 1092.8406231214.

Adding to 1305180242 its reverse (2420815031), we get a palindrome (3725995273).

The spelling of 1305180242 in words is "one billion, three hundred five million, one hundred eighty thousand, two hundred forty-two".