1261842048 has 48 divisors (see below), whose sum is σ = 3631085250. Its totient is φ = 420613632.

The previous prime is 1261842037. The next prime is 1261842053. The reversal of 1261842048 is 8402481621.

1261842048 is a `hidden beast` number, since 12 + 618 + 4 + 20 + 4 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1070074944 + 191767104 = 32712^2 + 13848^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

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 5 ways as a sum of consecutive naturals, for example, 546523 + ... + 548826.

Almost surely, 2^1261842048 is an apocalyptic number.

1261842048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1261842048 is an abundant number, since it is smaller than the sum of its proper divisors (2369243202).

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

1261842048 is a wasteful number, since it uses less digits than its factorization.

1261842048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095369 (or 1095354 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 1261842048 is about 35522.4161340413. The cubic root of 1261842048 is about 1080.6083815043.

The spelling of 1261842048 in words is "one billion, two hundred sixty-one million, eight hundred forty-two thousand, forty-eight".