1556042 has 8 divisors (see below), whose sum is σ = 2435616. Its totient is φ = 744172.

The previous prime is 1556039. The next prime is 1556059. The reversal of 1556042 is 2406551.

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

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 1555999 and 1556017.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16868 + ... + 16959.

It is an arithmetic number, because the mean of its divisors is an integer number (304452).

2^1556042 is an apocalyptic number.

1556042 is a deficient number, since it is larger than the sum of its proper divisors (879574).

1556042 is a wasteful number, since it uses less digits than its factorization.

1556042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33852.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1556042 is about 1247.4141253008. The cubic root of 1556042 is about 115.8796313840.

The spelling of 1556042 in words is "one million, five hundred fifty-six thousand, forty-two".