1245282840 has 48 divisors (see below), whose sum is σ = 4047170400. Its totient is φ = 332075328.

The previous prime is 1245282839. The next prime is 1245282869. The reversal of 1245282840 is 482825421.

1245282840 is a `hidden beast` number, since 124 + 528 + 2 + 8 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1245282795 and 1245282804.

It is a congruent number.

It is an unprimeable number.

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, 1729200 + ... + 1729919.

It is an arithmetic number, because the mean of its divisors is an integer number (84316050).

Almost surely, 2^1245282840 is an apocalyptic number.

1245282840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1245282840 is an abundant number, since it is smaller than the sum of its proper divisors (2801887560).

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

1245282840 is a wasteful number, since it uses less digits than its factorization.

1245282840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3459136 (or 3459129 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 36.

The square root of 1245282840 is about 35288.5652867894. The cubic root of 1245282840 is about 1075.8605951614.

The spelling of 1245282840 in words is "one billion, two hundred forty-five million, two hundred eighty-two thousand, eight hundred forty".