1245471045 has 64 divisors (see below), whose sum is σ = 2559320064. Its totient is φ = 502698240.

The previous prime is 1245471043. The next prime is 1245471047. The reversal of 1245471045 is 5401745421.

It is an interprime number because it is at equal distance from previous prime (1245471043) and next prime (1245471047).

It is not a de Polignac number, because 1245471045 - 2¹ = 1245471043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1245470997 and 1245471015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245471043) 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 in 63 ways as a sum of consecutive naturals, for example, 11560 + ... + 51230.

It is an arithmetic number, because the mean of its divisors is an integer number (39989376).

Almost surely, 2^1245471045 is an apocalyptic number.

1245471045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1245471045 is an abundant number, since it is smaller than the sum of its proper divisors (1313849019).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1245471045 is a wasteful number, since it uses less digits than its factorization.

1245471045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39722.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 1245471045 is about 35291.2318430513. The cubic root of 1245471045 is about 1075.9147922581.

The spelling of 1245471045 in words is "one billion, two hundred forty-five million, four hundred seventy-one thousand, forty-five".