1242123 has 8 divisors (see below), whose sum is σ = 1664208. Its totient is φ = 824064.

The previous prime is 1242121. The next prime is 1242151. The reversal of 1242123 is 3212421.

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

It is not a de Polignac number, because 1242123 - 2¹ = 1242121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190 + ... + 1587.

It is an arithmetic number, because the mean of its divisors is an integer number (208026).

2^1242123 is an apocalyptic number.

1242123 is a deficient number, since it is larger than the sum of its proper divisors (422085).

1242123 is a wasteful number, since it uses less digits than its factorization.

1242123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013.

The product of its digits is 96, while the sum is 15.

The square root of 1242123 is about 1114.5057200392. The cubic root of 1242123 is about 107.4949844424.

Adding to 1242123 its reverse (3212421), we get a palindrome (4454544).

The spelling of 1242123 in words is "one million, two hundred forty-two thousand, one hundred twenty-three".