1242064 has 20 divisors (see below), whose sum is σ = 2427300. Its totient is φ = 615680.

The previous prime is 1242061. The next prime is 1242067. The reversal of 1242064 is 4602421.

It is an interprime number because it is at equal distance from previous prime (1242061) and next prime (1242067).

It can be written as a sum of positive squares in 2 ways, for example, as 242064 + 1000000 = 492^2 + 1000^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242061) 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 3 ways as a sum of consecutive naturals, for example, 2124 + ... + 2644.

It is an arithmetic number, because the mean of its divisors is an integer number (121365).

2^1242064 is an apocalyptic number.

It is an amenable number.

1242064 is a deficient number, since it is larger than the sum of its proper divisors (1185236).

1242064 is a wasteful number, since it uses less digits than its factorization.

1242064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1242064 is about 1114.4792505920. The cubic root of 1242064 is about 107.4932824358.

Adding to 1242064 its reverse (4602421), we get a palindrome (5844485).

The spelling of 1242064 in words is "one million, two hundred forty-two thousand, sixty-four".