1242892 has 12 divisors (see below), whose sum is σ = 2485840. Its totient is φ = 532656.

The previous prime is 1242889. The next prime is 1242893. The reversal of 1242892 is 2982421.

1242892 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 44389 = 1242892 / (1 + 2 + 4 + 2 + 8 + 9 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 1242892.

It is not an unprimeable number, because it can be changed into a prime (1242893) 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, 22167 + ... + 22222.

2^1242892 is an apocalyptic number.

It is an amenable number.

1242892 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242892 is a wasteful number, since it uses less digits than its factorization.

1242892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44400 (or 44398 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 1242892 is about 1114.8506626450. The cubic root of 1242892 is about 107.5171632953.

The spelling of 1242892 in words is "one million, two hundred forty-two thousand, eight hundred ninety-two".