1597842 has 24 divisors (see below), whose sum is σ = 3582540. Its totient is φ = 514080.

The previous prime is 1597829. The next prime is 1597861. The reversal of 1597842 is 2487951.

It can be written as a sum of positive squares in 2 ways, for example, as 1461681 + 136161 = 1209^2 + 369^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1597797 and 1597806.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1009 + ... + 2052.

2^1597842 is an apocalyptic number.

1597842 is an abundant number, since it is smaller than the sum of its proper divisors (1984698).

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

1597842 is a wasteful number, since it uses less digits than its factorization.

1597842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3098 (or 3095 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 1597842 is about 1264.0577518452. The cubic root of 1597842 is about 116.9081022844.

It can be divided in two parts, 159 and 7842, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 1597842 in words is "one million, five hundred ninety-seven thousand, eight hundred forty-two".