1742249 has 2 divisors, whose sum is σ = 1742250. Its totient is φ = 1742248.

The previous prime is 1742197. The next prime is 1742261. The reversal of 1742249 is 9422471.

1742249 is nontrivially palindromic in base 4.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1194649 + 547600 = 1093^2 + 740^2 .

It is a cyclic number.

It is not a de Polignac number, because 1742249 - 2¹² = 1738153 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1741249) 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 as a sum of consecutive naturals, namely, 871124 + 871125.

It is an arithmetic number, because the mean of its divisors is an integer number (871125).

2^1742249 is an apocalyptic number.

It is an amenable number.

1742249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1742249 is an equidigital number, since it uses as much as digits as its factorization.

1742249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 1742249 is about 1319.9428017910. The cubic root of 1742249 is about 120.3289354845.

It can be divided in two parts, 17422 and 49, that added together give a palindrome (17471).

The spelling of 1742249 in words is "one million, seven hundred forty-two thousand, two hundred forty-nine".