1242557607 has 8 divisors (see below), whose sum is σ = 1657136880. Its totient is φ = 828175040.

The previous prime is 1242557597. The next prime is 1242557609. The reversal of 1242557607 is 7067552421.

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 1242557607 - 2¹⁰ = 1242556583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242557609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33744 + ... + 60197.

It is an arithmetic number, because the mean of its divisors is an integer number (207142110).

Almost surely, 2^1242557607 is an apocalyptic number.

1242557607 is a deficient number, since it is larger than the sum of its proper divisors (414579273).

1242557607 is an equidigital number, since it uses as much as digits as its factorization.

1242557607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98353.

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 1242557607 is about 35249.9305956764. The cubic root of 1242557607 is about 1075.0752013734.

The spelling of 1242557607 in words is "one billion, two hundred forty-two million, five hundred fifty-seven thousand, six hundred seven".