1206403061 has 4 divisors (see below), whose sum is σ = 1258855392. Its totient is φ = 1153950732.

The previous prime is 1206403057. The next prime is 1206403063. The reversal of 1206403061 is 1603046021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1206403061 - 2² = 1206403057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 52452307 = 1206403061 / (1 + 2 + 0 + 6 + 4 + 0 + 3 + 0 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206403063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26226131 + ... + 26226176.

It is an arithmetic number, because the mean of its divisors is an integer number (314713848).

Almost surely, 2^1206403061 is an apocalyptic number.

It is an amenable number.

1206403061 is a deficient number, since it is larger than the sum of its proper divisors (52452331).

1206403061 is an equidigital number, since it uses as much as digits as its factorization.

1206403061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52452330.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1206403061 is about 34733.3134181005. The cubic root of 1206403061 is about 1064.5452917181.

Adding to 1206403061 its reverse (1603046021), we get a palindrome (2809449082).

The spelling of 1206403061 in words is "one billion, two hundred six million, four hundred three thousand, sixty-one".