1156406 has 4 divisors (see below), whose sum is σ = 1734612. Its totient is φ = 578202.

The previous prime is 1156403. The next prime is 1156423. The reversal of 1156406 is 6046511.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289100 + ... + 289103.

It is an arithmetic number, because the mean of its divisors is an integer number (433653).

2^1156406 is an apocalyptic number.

1156406 is a deficient number, since it is larger than the sum of its proper divisors (578206).

1156406 is an equidigital number, since it uses as much as digits as its factorization.

1156406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578205.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1156406 is about 1075.3631944604. The cubic root of 1156406 is about 104.9631314247.

The spelling of 1156406 in words is "one million, one hundred fifty-six thousand, four hundred six".