1742428 has 12 divisors (see below), whose sum is σ = 3107160. Its totient is φ = 854672.

The previous prime is 1742423. The next prime is 1742443. The reversal of 1742428 is 8242471.

It is a junction number, because it is equal to n+sod(n) for n = 1742396 and 1742405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1742423) 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, 3898 + ... + 4321.

It is an arithmetic number, because the mean of its divisors is an integer number (258930).

2^1742428 is an apocalyptic number.

It is an amenable number.

1742428 is a deficient number, since it is larger than the sum of its proper divisors (1364732).

1742428 is a wasteful number, since it uses less digits than its factorization.

1742428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8276 (or 8274 counting only the distinct ones).

The product of its digits is 3584, while the sum is 28.

The square root of 1742428 is about 1320.0106060180. The cubic root of 1742428 is about 120.3330562391. Note that the first 3 decimals are identical.

Subtracting from 1742428 its sum of digits (28), we obtain a square (1742400 = 1320²).

Adding to 1742428 its reverse (8242471), we get a palindrome (9984899).

The spelling of 1742428 in words is "one million, seven hundred forty-two thousand, four hundred twenty-eight".