1242550 has 12 divisors (see below), whose sum is σ = 2311236. Its totient is φ = 497000.

The previous prime is 1242517. The next prime is 1242569. The reversal of 1242550 is 552421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12376 + ... + 12475.

It is an arithmetic number, because the mean of its divisors is an integer number (192603).

2^1242550 is an apocalyptic number.

1242550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242550 is a deficient number, since it is larger than the sum of its proper divisors (1068686).

1242550 is a wasteful number, since it uses less digits than its factorization.

1242550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24863 (or 24858 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1242550 is about 1114.6972683200. The cubic root of 1242550 is about 107.5073007481.

Adding to 1242550 its reverse (552421), we get a palindrome (1794971).

The spelling of 1242550 in words is "one million, two hundred forty-two thousand, five hundred fifty".