1200425171 has 4 divisors (see below), whose sum is σ = 1309554744. Its totient is φ = 1091295600.

The previous prime is 1200425153. The next prime is 1200425197. The reversal of 1200425171 is 1715240021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1200425171 - 2²⁶ = 1133316307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200425371) 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, 54564770 + ... + 54564791.

It is an arithmetic number, because the mean of its divisors is an integer number (327388686).

Almost surely, 2^1200425171 is an apocalyptic number.

1200425171 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1200425171 is a deficient number, since it is larger than the sum of its proper divisors (109129573).

1200425171 is a wasteful number, since it uses less digits than its factorization.

1200425171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109129572.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 1200425171 is about 34647.1524226739. The cubic root of 1200425171 is about 1062.7840575872.

Adding to 1200425171 its reverse (1715240021), we get a palindrome (2915665192).

The spelling of 1200425171 in words is "one billion, two hundred million, four hundred twenty-five thousand, one hundred seventy-one".