1245781752 has 32 divisors (see below), whose sum is σ = 3249866880. Its totient is φ = 397205600.

The previous prime is 1245781751. The next prime is 1245781753. The reversal of 1245781752 is 2571875421.

It is an interprime number because it is at equal distance from previous prime (1245781751) and next prime (1245781753).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245781751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1127874 + ... + 1128977.

It is an arithmetic number, because the mean of its divisors is an integer number (101558340).

Almost surely, 2^1245781752 is an apocalyptic number.

1245781752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1245781752 is an abundant number, since it is smaller than the sum of its proper divisors (2004085128).

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

1245781752 is a wasteful number, since it uses less digits than its factorization.

1245781752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256883 (or 2256879 counting only the distinct ones).

The product of its digits is 156800, while the sum is 42.

The square root of 1245781752 is about 35295.6336109723. The cubic root of 1245781752 is about 1076.0042541164.

The spelling of 1245781752 in words is "one billion, two hundred forty-five million, seven hundred eighty-one thousand, seven hundred fifty-two".