1242471835361 has 2 divisors, whose sum is σ = 1242471835362. Its totient is φ = 1242471835360.

The previous prime is 1242471835229. The next prime is 1242471835391. The reversal of 1242471835361 is 1635381742421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 835834777600 + 406637057761 = 914240^2 + 637681^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242471835361 - 2²² = 1242467641057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1242471835391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621235917680 + 621235917681.

It is an arithmetic number, because the mean of its divisors is an integer number (621235917681).

Almost surely, 2^{1242471835361} is an apocalyptic number.

It is an amenable number.

1242471835361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242471835361 is an equidigital number, since it uses as much as digits as its factorization.

1242471835361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 47.

The spelling of 1242471835361 in words is "one trillion, two hundred forty-two billion, four hundred seventy-one million, eight hundred thirty-five thousand, three hundred sixty-one".