1242153457001 has 2 divisors, whose sum is σ = 1242153457002. Its totient is φ = 1242153457000.

The previous prime is 1242153456949. The next prime is 1242153457007. The reversal of 1242153457001 is 1007543512421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1096049861776 + 146103595225 = 1046924^2 + 382235^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242153457001 - 2³⁸ = 967275550057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1242153457007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621076728500 + 621076728501.

It is an arithmetic number, because the mean of its divisors is an integer number (621076728501).

Almost surely, 2^{1242153457001} is an apocalyptic number.

It is an amenable number.

1242153457001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242153457001 is an equidigital number, since it uses as much as digits as its factorization.

1242153457001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 35.

Adding to 1242153457001 its reverse (1007543512421), we get a palindrome (2249696969422).

The spelling of 1242153457001 in words is "one trillion, two hundred forty-two billion, one hundred fifty-three million, four hundred fifty-seven thousand, one".