1204274939520 has 128 divisors (see below), whose sum is σ = 3841798371840. Its totient is φ = 320874614784.

The previous prime is 1204274939513. The next prime is 1204274939533. The reversal of 1204274939520 is 259394724021.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1204274939520.

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 15 ways as a sum of consecutive naturals, for example, 2070417 + ... + 2587503.

It is an arithmetic number, because the mean of its divisors is an integer number (30014049780).

Almost surely, 2^{1204274939520} is an apocalyptic number.

1204274939520 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 1204274939520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1920899185920).

1204274939520 is an abundant number, since it is smaller than the sum of its proper divisors (2637523432320).

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

1204274939520 is a wasteful number, since it uses less digits than its factorization.

1204274939520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518322 (or 518310 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 1204274939520 in words is "one trillion, two hundred four billion, two hundred seventy-four million, nine hundred thirty-nine thousand, five hundred twenty".