1247820104 has 32 divisors (see below), whose sum is σ = 2443331520. Its totient is φ = 596308416.

The previous prime is 1247820103. The next prime is 1247820131. The reversal of 1247820104 is 4010287421.

It is not an unprimeable number, because it can be changed into a prime (1247820103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363902 + ... + 367314.

It is an arithmetic number, because the mean of its divisors is an integer number (76354110).

Almost surely, 2^1247820104 is an apocalyptic number.

It is an amenable number.

1247820104 is a deficient number, since it is larger than the sum of its proper divisors (1195511416).

1247820104 is a wasteful number, since it uses less digits than its factorization.

1247820104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5429 (or 5425 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 1247820104 is about 35324.4972221828. The cubic root of 1247820104 is about 1076.5907881786.

The spelling of 1247820104 in words is "one billion, two hundred forty-seven million, eight hundred twenty thousand, one hundred four".