1262742125 has 16 divisors (see below), whose sum is σ = 1577072640. Its totient is φ = 1009443600.

The previous prime is 1262742121. The next prime is 1262742193. The reversal of 1262742125 is 5212472621.

It is not a de Polignac number, because 1262742125 - 2² = 1262742121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1262742091 and 1262742100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1262742121) 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 in 15 ways as a sum of consecutive naturals, for example, 217004 + ... + 222746.

It is an arithmetic number, because the mean of its divisors is an integer number (98567040).

Almost surely, 2^1262742125 is an apocalyptic number.

It is an amenable number.

1262742125 is a deficient number, since it is larger than the sum of its proper divisors (314330515).

1262742125 is an equidigital number, since it uses as much as digits as its factorization.

1262742125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7517 (or 7507 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 1262742125 is about 35535.0830166471. The cubic root of 1262742125 is about 1080.8652545371.

The spelling of 1262742125 in words is "one billion, two hundred sixty-two million, seven hundred forty-two thousand, one hundred twenty-five".