1242265601 has 16 divisors (see below), whose sum is σ = 1317593088. Its totient is φ = 1169798400.

The previous prime is 1242265579. The next prime is 1242265603. The reversal of 1242265601 is 1065622421.

It is a cyclic number.

It is not a de Polignac number, because 1242265601 - 2¹⁰ = 1242264577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242265603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136256 + ... + 145086.

It is an arithmetic number, because the mean of its divisors is an integer number (82349568).

Almost surely, 2^1242265601 is an apocalyptic number.

It is an amenable number.

1242265601 is a deficient number, since it is larger than the sum of its proper divisors (75327487).

1242265601 is an equidigital number, since it uses as much as digits as its factorization.

1242265601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8992.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1242265601 is about 35245.7884150717. The cubic root of 1242265601 is about 1074.9909791203.

The spelling of 1242265601 in words is "one billion, two hundred forty-two million, two hundred sixty-five thousand, six hundred one".