1742491 has 4 divisors (see below), whose sum is σ = 1746000. Its totient is φ = 1738984.

The previous prime is 1742473. The next prime is 1742497. The reversal of 1742491 is 1942471.

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

It is a cyclic number.

It is not a de Polignac number, because 1742491 - 2⁹ = 1741979 is a prime.

It is a Duffinian number.

1742491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1742497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 856 + ... + 2053.

It is an arithmetic number, because the mean of its divisors is an integer number (436500).

2^1742491 is an apocalyptic number.

1742491 is a deficient number, since it is larger than the sum of its proper divisors (3509).

1742491 is an equidigital number, since it uses as much as digits as its factorization.

1742491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508.

The product of its digits is 2016, while the sum is 28.

The square root of 1742491 is about 1320.0344692469. The cubic root of 1742491 is about 120.3345064934.

The spelling of 1742491 in words is "one million, seven hundred forty-two thousand, four hundred ninety-one".