1201405017 has 12 divisors (see below), whose sum is σ = 1686549840. Its totient is φ = 758616840.

The previous prime is 1201404983. The next prime is 1201405067. The reversal of 1201405017 is 7105041021.

It is a happy number.

It is not a de Polignac number, because 1201405017 - 2⁷ = 1201404889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201404984 and 1201405002.

It is not an unprimeable number, because it can be changed into a prime (1201405067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 259392 + ... + 263982.

It is an arithmetic number, because the mean of its divisors is an integer number (140545820).

Almost surely, 2^1201405017 is an apocalyptic number.

It is an amenable number.

1201405017 is a deficient number, since it is larger than the sum of its proper divisors (485144823).

1201405017 is an frugal number, since it uses more digits than its factorization.

1201405017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9204 (or 4613 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 1201405017 is about 34661.2898923280. The cubic root of 1201405017 is about 1063.0731444662.

Adding to 1201405017 its reverse (7105041021), we get a palindrome (8306446038).

The spelling of 1201405017 in words is "one billion, two hundred one million, four hundred five thousand, seventeen".