1242470501 has 2 divisors, whose sum is σ = 1242470502. Its totient is φ = 1242470500.

The previous prime is 1242470491. The next prime is 1242470507. The reversal of 1242470501 is 1050742421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1230185476 + 12285025 = 35074^2 + 3505^2 .

It is an emirp because it is prime and its reverse (1050742421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242470501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242470507) 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 as a sum of consecutive naturals, namely, 621235250 + 621235251.

It is an arithmetic number, because the mean of its divisors is an integer number (621235251).

Almost surely, 2^1242470501 is an apocalyptic number.

It is an amenable number.

1242470501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242470501 is an equidigital number, since it uses as much as digits as its factorization.

1242470501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 1242470501 is about 35248.6950254900. The cubic root of 1242470501 is about 1075.0500790804.

The spelling of 1242470501 in words is "one billion, two hundred forty-two million, four hundred seventy thousand, five hundred one".