1204242520 has 64 divisors (see below), whose sum is σ = 2985887520. Its totient is φ = 434294784.

The previous prime is 1204242499. The next prime is 1204242577. The reversal of 1204242520 is 252424021.

It is a junction number, because it is equal to n+sod(n) for n = 1204242491 and 1204242500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4569 + ... + 49288.

Almost surely, 2^1204242520 is an apocalyptic number.

1204242520 is a gapful number since it is divisible by the number (10) 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 1204242520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1492943760).

1204242520 is an abundant number, since it is smaller than the sum of its proper divisors (1781645000).

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

1204242520 is a wasteful number, since it uses less digits than its factorization.

1204242520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53924 (or 53920 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 1204242520 is about 34702.1976249344. The cubic root of 1204242520 is about 1063.9094157530.

Adding to 1204242520 its reverse (252424021), we get a palindrome (1456666541).

The spelling of 1204242520 in words is "one billion, two hundred four million, two hundred forty-two thousand, five hundred twenty".