1302142549 has 2 divisors, whose sum is σ = 1302142550. Its totient is φ = 1302142548.

The previous prime is 1302142529. The next prime is 1302142559. The reversal of 1302142549 is 9452412031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 872907025 + 429235524 = 29545^2 + 20718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1302142549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1302142549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1302142519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651071274 + 651071275.

It is an arithmetic number, because the mean of its divisors is an integer number (651071275).

Almost surely, 2^1302142549 is an apocalyptic number.

It is an amenable number.

1302142549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1302142549 is an equidigital number, since it uses as much as digits as its factorization.

1302142549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1302142549 is about 36085.2123313692. The cubic root of 1302142549 is about 1091.9921341573.

The spelling of 1302142549 in words is "one billion, three hundred two million, one hundred forty-two thousand, five hundred forty-nine".