1355124012 has 72 divisors (see below), whose sum is σ = 3486379008. Its totient is φ = 409363680.

The previous prime is 1355123999. The next prime is 1355124041. The reversal of 1355124012 is 2104215531.

It is a happy number.

It is a super-2 number, since 2×1355124012² = 3672722175797952288, which contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 531613 + ... + 534155.

Almost surely, 2^1355124012 is an apocalyptic number.

1355124012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1355124012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1743189504).

1355124012 is an abundant number, since it is smaller than the sum of its proper divisors (2131254996).

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

1355124012 is a wasteful number, since it uses less digits than its factorization.

1355124012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939 (or 2926 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1355124012 is about 36812.0090731272. The cubic root of 1355124012 is about 1106.6059821000.

Adding to 1355124012 its reverse (2104215531), we get a palindrome (3459339543).

The spelling of 1355124012 in words is "one billion, three hundred fifty-five million, one hundred twenty-four thousand, twelve".