1742320 has 40 divisors (see below), whose sum is σ = 4196160. Its totient is φ = 672000.

The previous prime is 1742309. The next prime is 1742339. The reversal of 1742320 is 232471.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1945 + ... + 2695.

It is an arithmetic number, because the mean of its divisors is an integer number (104904).

2^1742320 is an apocalyptic number.

1742320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1742320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2098080).

1742320 is an abundant number, since it is smaller than the sum of its proper divisors (2453840).

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

1742320 is a wasteful number, since it uses less digits than its factorization.

1742320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 787 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 1742320 is about 1319.9696966219. The cubic root of 1742320 is about 120.3305700075.

Adding to 1742320 its reverse (232471), we get a palindrome (1974791).

The spelling of 1742320 in words is "one million, seven hundred forty-two thousand, three hundred twenty".