1203123 has 8 divisors (see below), whose sum is σ = 1659600. Its totient is φ = 774368.

The previous prime is 1203121. The next prime is 1203127. The reversal of 1203123 is 3213021.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1203123 - 2¹ = 1203121 is a prime.

It is an Ulam number.

1203123 is a lucky number.

It is a plaindrome in base 9.

It is a zygodrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 1203099 and 1203108.

It is not an unprimeable number, because it can be changed into a prime (1203121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6828 + ... + 7001.

It is an arithmetic number, because the mean of its divisors is an integer number (207450).

2^1203123 is an apocalyptic number.

1203123 is a deficient number, since it is larger than the sum of its proper divisors (456477).

1203123 is a wasteful number, since it uses less digits than its factorization.

1203123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13861.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1203123 is about 1096.8696367390. The cubic root of 1203123 is about 106.3579626935.

Adding to 1203123 its reverse (3213021), we get a palindrome (4416144).

It can be divided in two parts, 1203 and 123, that added together give a triangular number (1326 = T₅₁).

The spelling of 1203123 in words is "one million, two hundred three thousand, one hundred twenty-three".