71232105 has 16 divisors (see below), whose sum is σ = 130253184. Its totient is φ = 32563200.

The previous prime is 71232101. The next prime is 71232137. The reversal of 71232105 is 50123217.

It is not a de Polignac number, because 71232105 - 2² = 71232101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (71232101) 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, 339096 + ... + 339305.

It is an arithmetic number, because the mean of its divisors is an integer number (8140824).

Almost surely, 2^71232105 is an apocalyptic number.

It is an amenable number.

71232105 is a deficient number, since it is larger than the sum of its proper divisors (59021079).

71232105 is a wasteful number, since it uses less digits than its factorization.

71232105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678416.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 71232105 is about 8439.9114331846. The cubic root of 71232105 is about 414.5325069099.

The spelling of 71232105 in words is "seventy-one million, two hundred thirty-two thousand, one hundred five".