1428122 has 4 divisors (see below), whose sum is σ = 2142186. Its totient is φ = 714060.

The previous prime is 1428113. The next prime is 1428127. The reversal of 1428122 is 2218241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 724201 + 703921 = 851^2 + 839^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1428094 and 1428103.

It is not an unprimeable number, because it can be changed into a prime (1428127) 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 as a sum of consecutive naturals, namely, 357029 + ... + 357032.

2^1428122 is an apocalyptic number.

1428122 is a deficient number, since it is larger than the sum of its proper divisors (714064).

1428122 is an equidigital number, since it uses as much as digits as its factorization.

1428122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714063.

The product of its digits is 256, while the sum is 20.

The square root of 1428122 is about 1195.0405850849. The cubic root of 1428122 is about 112.6129762195.

The spelling of 1428122 in words is "one million, four hundred twenty-eight thousand, one hundred twenty-two".