1280520124 has 96 divisors (see below), whose sum is σ = 2724180480. Its totient is φ = 520743168.

The previous prime is 1280520097. The next prime is 1280520127. The reversal of 1280520124 is 4210250821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280520127) 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 31 ways as a sum of consecutive naturals, for example, 840027 + ... + 841549.

It is an arithmetic number, because the mean of its divisors is an integer number (28376880).

Almost surely, 2^1280520124 is an apocalyptic number.

It is an amenable number.

1280520124 is an abundant number, since it is smaller than the sum of its proper divisors (1443660356).

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

1280520124 is a wasteful number, since it uses less digits than its factorization.

1280520124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619 (or 1617 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 1280520124 is about 35784.3558555970. The cubic root of 1280520124 is about 1085.9140927380.

Adding to 1280520124 its reverse (4210250821), we get a palindrome (5490770945).

The spelling of 1280520124 in words is "one billion, two hundred eighty million, five hundred twenty thousand, one hundred twenty-four".