1540342 has 8 divisors (see below), whose sum is σ = 2340000. Its totient is φ = 760344.

The previous prime is 1540337. The next prime is 1540367. The reversal of 1540342 is 2430451.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 4717 + ... + 5032.

It is an arithmetic number, because the mean of its divisors is an integer number (292500).

2^1540342 is an apocalyptic number.

1540342 is a deficient number, since it is larger than the sum of its proper divisors (799658).

1540342 is an equidigital number, since it uses as much as digits as its factorization.

1540342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9830.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 1540342 is about 1241.1051526764. The cubic root of 1540342 is about 115.4885829185.

Adding to 1540342 its reverse (2430451), we get a palindrome (3970793).

The spelling of 1540342 in words is "one million, five hundred forty thousand, three hundred forty-two".