1047499121 has 2 divisors, whose sum is σ = 1047499122. Its totient is φ = 1047499120.

The previous prime is 1047499109. The next prime is 1047499147. The reversal of 1047499121 is 1219947401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 721191025 + 326308096 = 26855^2 + 18064^2 .

It is an emirp because it is prime and its reverse (1219947401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1047499121 - 2¹⁸ = 1047236977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1047499151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523749560 + 523749561.

It is an arithmetic number, because the mean of its divisors is an integer number (523749561).

Almost surely, 2^1047499121 is an apocalyptic number.

It is an amenable number.

1047499121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1047499121 is an equidigital number, since it uses as much as digits as its factorization.

1047499121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 1047499121 is about 32365.0910859216. The cubic root of 1047499121 is about 1015.5887679079.

The spelling of 1047499121 in words is "one billion, forty-seven million, four hundred ninety-nine thousand, one hundred twenty-one".