1245283457 has 12 divisors (see below), whose sum is σ = 1420130544. Its totient is φ = 1082850120.

The previous prime is 1245283453. The next prime is 1245283499. The reversal of 1245283457 is 7543825421.

It is not a de Polignac number, because 1245283457 - 2² = 1245283453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1245283453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101183 + ... + 112820.

It is an arithmetic number, because the mean of its divisors is an integer number (118344212).

Almost surely, 2^1245283457 is an apocalyptic number.

It is an amenable number.

1245283457 is a deficient number, since it is larger than the sum of its proper divisors (174847087).

1245283457 is a wasteful number, since it uses less digits than its factorization.

1245283457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214060 (or 214037 counting only the distinct ones).

The product of its digits is 268800, while the sum is 41.

The square root of 1245283457 is about 35288.5740289970. The cubic root of 1245283457 is about 1075.8607728468.

The spelling of 1245283457 in words is "one billion, two hundred forty-five million, two hundred eighty-three thousand, four hundred fifty-seven".