1242429017 has 2 divisors, whose sum is σ = 1242429018. Its totient is φ = 1242429016.

The previous prime is 1242429007. The next prime is 1242429091. The reversal of 1242429017 is 7109242421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1174844176 + 67584841 = 34276^2 + 8221^2 .

It is an emirp because it is prime and its reverse (7109242421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1242429017 - 2⁶ = 1242428953 is a prime.

It is not a weakly prime, because it can be changed into another prime (1242429007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621214508 + 621214509.

It is an arithmetic number, because the mean of its divisors is an integer number (621214509).

Almost surely, 2^1242429017 is an apocalyptic number.

It is an amenable number.

1242429017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242429017 is an equidigital number, since it uses as much as digits as its factorization.

1242429017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 1242429017 is about 35248.1065732615. The cubic root of 1242429017 is about 1075.0381142427.

The spelling of 1242429017 in words is "one billion, two hundred forty-two million, four hundred twenty-nine thousand, seventeen".