1242529 has 8 divisors (see below), whose sum is σ = 1313280. Its totient is φ = 1173216.

The previous prime is 1242517. The next prime is 1242569. The reversal of 1242529 is 9252421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1242529 - 2¹⁷ = 1111457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242569) 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 in 7 ways as a sum of consecutive naturals, for example, 1744 + ... + 2350.

It is an arithmetic number, because the mean of its divisors is an integer number (164160).

2^1242529 is an apocalyptic number.

It is an amenable number.

1242529 is a deficient number, since it is larger than the sum of its proper divisors (70751).

1242529 is an equidigital number, since it uses as much as digits as its factorization.

1242529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719.

The product of its digits is 1440, while the sum is 25.

The square root of 1242529 is about 1114.6878486823. The cubic root of 1242529 is about 107.5066950941.

It can be divided in two parts, 1242 and 529, that added together give a palindrome (1771).

The spelling of 1242529 in words is "one million, two hundred forty-two thousand, five hundred twenty-nine".