1604742 has 16 divisors (see below), whose sum is σ = 3255552. Its totient is φ = 527240.

The previous prime is 1604737. The next prime is 1604747. The reversal of 1604742 is 2474061.

It is an interprime number because it is at equal distance from previous prime (1604737) and next prime (1604747).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1458 + ... + 2309.

It is an arithmetic number, because the mean of its divisors is an integer number (203472).

2^1604742 is an apocalyptic number.

1604742 is an abundant number, since it is smaller than the sum of its proper divisors (1650810).

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

1604742 is a wasteful number, since it uses less digits than its factorization.

1604742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3843.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 1604742 is about 1266.7841173618. The cubic root of 1604742 is about 117.0761429991.

It can be divided in two parts, 1604 and 742, that added together give a triangular number (2346 = T₆₈).

The spelling of 1604742 in words is "one million, six hundred four thousand, seven hundred forty-two".