1215047 has 2 divisors, whose sum is σ = 1215048. Its totient is φ = 1215046.

The previous prime is 1215029. The next prime is 1215079. The reversal of 1215047 is 7405121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1215047 - 2¹⁰ = 1214023 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1215017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607523 + 607524.

It is an arithmetic number, because the mean of its divisors is an integer number (607524).

2^1215047 is an apocalyptic number.

1215047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215047 is an equidigital number, since it uses as much as digits as its factorization.

1215047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 1215047 is about 1102.2917036792. The cubic root of 1215047 is about 106.7081750345.

The spelling of 1215047 in words is "one million, two hundred fifteen thousand, forty-seven".