1242153337 has 2 divisors, whose sum is σ = 1242153338. Its totient is φ = 1242153336.

The previous prime is 1242153301. The next prime is 1242153371. The reversal of 1242153337 is 7333512421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1237913856 + 4239481 = 35184^2 + 2059^2 .

It is an emirp because it is prime and its reverse (7333512421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1242153337 - 2¹¹ = 1242151289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1242153299 and 1242153308.

It is not a weakly prime, because it can be changed into another prime (1242157337) 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, 621076668 + 621076669.

It is an arithmetic number, because the mean of its divisors is an integer number (621076669).

Almost surely, 2^1242153337 is an apocalyptic number.

It is an amenable number.

1242153337 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242153337 is an equidigital number, since it uses as much as digits as its factorization.

1242153337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 31.

The square root of 1242153337 is about 35244.1957916477. The cubic root of 1242153337 is about 1074.9585957011.

Adding to 1242153337 its reverse (7333512421), we get a palindrome (8575665758).

The spelling of 1242153337 in words is "one billion, two hundred forty-two million, one hundred fifty-three thousand, three hundred thirty-seven".