1242522001 has 8 divisors (see below), whose sum is σ = 1420394624. Its totient is φ = 1064741760.

The previous prime is 1242521999. The next prime is 1242522007. The reversal of 1242522001 is 1002252421.

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 1242522001 - 2¹ = 1242521999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1242522001.

It is not an unprimeable number, because it can be changed into a prime (1242522007) 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, 8641 + ... + 50593.

It is an arithmetic number, because the mean of its divisors is an integer number (177549328).

Almost surely, 2^1242522001 is an apocalyptic number.

It is an amenable number.

1242522001 is a deficient number, since it is larger than the sum of its proper divisors (177872623).

1242522001 is an equidigital number, since it uses as much as digits as its factorization.

1242522001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46191.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1242522001 is about 35249.4255414184. The cubic root of 1242522001 is about 1075.0649323677.

Adding to 1242522001 its reverse (1002252421), we get a palindrome (2244774422).

It can be divided in two parts, 124252 and 2001, that added together give a triangular number (126253 = T₅₀₂).

The spelling of 1242522001 in words is "one billion, two hundred forty-two million, five hundred twenty-two thousand, one".