1204642980 has 36 divisors (see below), whose sum is σ = 3654084252. Its totient is φ = 321238080.

The previous prime is 1204642973. The next prime is 1204643023. The reversal of 1204642980 is 892464021.

1204642980 is a `hidden beast` number, since 1 + 2 + 0 + 4 + 642 + 9 + 8 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 704583936 + 500059044 = 26544^2 + 22362^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3346051 + ... + 3346410.

Almost surely, 2^1204642980 is an apocalyptic number.

1204642980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1204642980 is an abundant number, since it is smaller than the sum of its proper divisors (2449441272).

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

1204642980 is a wasteful number, since it uses less digits than its factorization.

1204642980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6692476 (or 6692471 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1204642980 is about 34707.9670969073. The cubic root of 1204642980 is about 1064.0273338466.

The spelling of 1204642980 in words is "one billion, two hundred four million, six hundred forty-two thousand, nine hundred eighty".