1242016171 has 16 divisors (see below), whose sum is σ = 1395820800. Its totient is φ = 1095383520.

The previous prime is 1242016163. The next prime is 1242016183. The reversal of 1242016171 is 1716102421.

It is not a de Polignac number, because 1242016171 - 2³ = 1242016163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242016121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61666 + ... + 79288.

It is an arithmetic number, because the mean of its divisors is an integer number (87238800).

Almost surely, 2^1242016171 is an apocalyptic number.

1242016171 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1242016171 is a deficient number, since it is larger than the sum of its proper divisors (153804629).

1242016171 is a wasteful number, since it uses less digits than its factorization.

1242016171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17826.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1242016171 is about 35242.2498004880. The cubic root of 1242016171 is about 1074.9190264590.

Adding to 1242016171 its reverse (1716102421), we get a palindrome (2958118592).

The spelling of 1242016171 in words is "one billion, two hundred forty-two million, sixteen thousand, one hundred seventy-one".