1242801601 has 4 divisors (see below), whose sum is σ = 1244312512. Its totient is φ = 1241290692.

The previous prime is 1242801587. The next prime is 1242801613. The reversal of 1242801601 is 1061082421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1242801601 - 2⁵ = 1242801569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242801631) 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 3 ways as a sum of consecutive naturals, for example, 754221 + ... + 755866.

It is an arithmetic number, because the mean of its divisors is an integer number (311078128).

Almost surely, 2^1242801601 is an apocalyptic number.

It is an amenable number.

1242801601 is a deficient number, since it is larger than the sum of its proper divisors (1510911).

1242801601 is an equidigital number, since it uses as much as digits as its factorization.

1242801601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510910.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 1242801601 is about 35253.3913404087. The cubic root of 1242801601 is about 1075.1455655774.

The spelling of 1242801601 in words is "one billion, two hundred forty-two million, eight hundred one thousand, six hundred one".