1249747 has 2 divisors, whose sum is σ = 1249748. Its totient is φ = 1249746.

The previous prime is 1249741. The next prime is 1249757. The reversal of 1249747 is 7479421.

It is a weak prime.

It is an emirp because it is prime and its reverse (7479421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1249747 - 2³ = 1249739 is a prime.

It is not a weakly prime, because it can be changed into another prime (1249741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624873 + 624874.

It is an arithmetic number, because the mean of its divisors is an integer number (624874).

2^1249747 is an apocalyptic number.

1249747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249747 is an equidigital number, since it uses as much as digits as its factorization.

1249747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 34.

The square root of 1249747 is about 1117.9208379845. The cubic root of 1249747 is about 107.7144663849.

It can be divided in two parts, 12497 and 47, that added together give a square (12544 = 112²).

The spelling of 1249747 in words is "one million, two hundred forty-nine thousand, seven hundred forty-seven".