1604542 has 8 divisors (see below), whose sum is σ = 2471976. Its totient is φ = 780552.

The previous prime is 1604539. The next prime is 1604543. The reversal of 1604542 is 2454061.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604543) 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, 10768 + ... + 10915.

It is an arithmetic number, because the mean of its divisors is an integer number (308997).

2^1604542 is an apocalyptic number.

1604542 is a deficient number, since it is larger than the sum of its proper divisors (867434).

1604542 is a wasteful number, since it uses less digits than its factorization.

1604542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21722.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1604542 is about 1266.7051748532. The cubic root of 1604542 is about 117.0712790394.

The spelling of 1604542 in words is "one million, six hundred four thousand, five hundred forty-two".