1261203 has 8 divisors (see below), whose sum is σ = 1689600. Its totient is φ = 836808.

The previous prime is 1261199. The next prime is 1261217. The reversal of 1261203 is 3021621.

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

It is not a de Polignac number, because 1261203 - 2² = 1261199 is a prime.

It is a super-3 number, since 3×1261203³ = 6018333361773037281, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1261223) 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, 163 + ... + 1596.

It is an arithmetic number, because the mean of its divisors is an integer number (211200).

2^1261203 is an apocalyptic number.

1261203 is a deficient number, since it is larger than the sum of its proper divisors (428397).

1261203 is a wasteful number, since it uses less digits than its factorization.

1261203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1261203 is about 1123.0329469788. The cubic root of 1261203 is about 108.0425929394.

Adding to 1261203 its reverse (3021621), we get a palindrome (4282824).

The spelling of 1261203 in words is "one million, two hundred sixty-one thousand, two hundred three".