1559420 has 24 divisors (see below), whose sum is σ = 3310944. Its totient is φ = 616896.

The previous prime is 1559407. The next prime is 1559431. The reversal of 1559420 is 249551.

1559420 = 438² + 439² + ... + 445².

It is a self number, because there is not a number n which added to its sum of digits gives 1559420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1682 + ... + 2438.

It is an arithmetic number, because the mean of its divisors is an integer number (137956).

2^1559420 is an apocalyptic number.

1559420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1559420 is an abundant number, since it is smaller than the sum of its proper divisors (1751524).

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

1559420 is a wasteful number, since it uses less digits than its factorization.

1559420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1559420 is about 1248.7673922713. The cubic root of 1559420 is about 115.9634248542.

The spelling of 1559420 in words is "one million, five hundred fifty-nine thousand, four hundred twenty".