1242180577 has 8 divisors (see below), whose sum is σ = 1401834240. Its totient is φ = 1090314960.

The previous prime is 1242180503. The next prime is 1242180581. The reversal of 1242180577 is 7750812421.

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

It is a cyclic number.

It is not a de Polignac number, because 1242180577 - 2⁷ = 1242180449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242180077) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1946673 + ... + 1947310.

It is an arithmetic number, because the mean of its divisors is an integer number (175229280).

Almost surely, 2^1242180577 is an apocalyptic number.

It is an amenable number.

1242180577 is a deficient number, since it is larger than the sum of its proper divisors (159653663).

1242180577 is a wasteful number, since it uses less digits than its factorization.

1242180577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3894023.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 1242180577 is about 35244.5822361395. The cubic root of 1242180577 is about 1074.9664534691.

Adding to 1242180577 its reverse (7750812421), we get a palindrome (8992992998).

The spelling of 1242180577 in words is "one billion, two hundred forty-two million, one hundred eighty thousand, five hundred seventy-seven".