1004156 has 12 divisors (see below), whose sum is σ = 1860768. Its totient is φ = 472512.

The previous prime is 1004141. The next prime is 1004161. The reversal of 1004156 is 6514001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7316 + ... + 7451.

It is an arithmetic number, because the mean of its divisors is an integer number (155064).

2^1004156 is an apocalyptic number.

It is an amenable number.

1004156 is a deficient number, since it is larger than the sum of its proper divisors (856612).

1004156 is a wasteful number, since it uses less digits than its factorization.

1004156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14788 (or 14786 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1004156 is about 1002.0758454329. The cubic root of 1004156 is about 100.1383418604.

Adding to 1004156 its reverse (6514001), we get a palindrome (7518157).

The spelling of 1004156 in words is "one million, four thousand, one hundred fifty-six".