1423156 has 36 divisors (see below), whose sum is σ = 2973348. Its totient is φ = 594048.

The previous prime is 1423129. The next prime is 1423159. The reversal of 1423156 is 6513241.

It can be written as a sum of positive squares in 2 ways, for example, as 933156 + 490000 = 966^2 + 700^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10320 + ... + 10456.

It is an arithmetic number, because the mean of its divisors is an integer number (82593).

2^1423156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1423156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1486674).

1423156 is an abundant number, since it is smaller than the sum of its proper divisors (1550192).

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

1423156 is a wasteful number, since it uses less digits than its factorization.

1423156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 199 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 1423156 is about 1192.9610219953. The cubic root of 1423156 is about 112.4822951562.

Adding to 1423156 its reverse (6513241), we get a palindrome (7936397).

The spelling of 1423156 in words is "one million, four hundred twenty-three thousand, one hundred fifty-six".