1242923 has 12 divisors (see below), whose sum is σ = 1435608. Its totient is φ = 1067040.

The previous prime is 1242893. The next prime is 1242929. The reversal of 1242923 is 3292421.

It is not a de Polignac number, because 1242923 - 2⁶ = 1242859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242929) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3815 + ... + 4127.

It is an arithmetic number, because the mean of its divisors is an integer number (119634).

2^1242923 is an apocalyptic number.

1242923 is a deficient number, since it is larger than the sum of its proper divisors (192685).

1242923 is a wasteful number, since it uses less digits than its factorization.

1242923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 343 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 1242923 is about 1114.8645657657. The cubic root of 1242923 is about 107.5180571794.

The spelling of 1242923 in words is "one million, two hundred forty-two thousand, nine hundred twenty-three".