1247801 has 2 divisors, whose sum is σ = 1247802. Its totient is φ = 1247800.

The previous prime is 1247797. The next prime is 1247833. The reversal of 1247801 is 1087421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1207801 + 40000 = 1099^2 + 200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1247801 - 2² = 1247797 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (1247861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623900 + 623901.

It is an arithmetic number, because the mean of its divisors is an integer number (623901).

2^1247801 is an apocalyptic number.

It is an amenable number.

1247801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1247801 is an equidigital number, since it uses as much as digits as its factorization.

1247801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 1247801 is about 1117.0501331632. The cubic root of 1247801 is about 107.6585293985.

It can be divided in two parts, 1247 and 801, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 1247801 in words is "one million, two hundred forty-seven thousand, eight hundred one".