71200019 has 8 divisors (see below), whose sum is σ = 81050112. Its totient is φ = 61912840.

The previous prime is 71200013. The next prime is 71200021. The reversal of 71200019 is 91000217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71200019 - 2²⁴ = 54422803 is a prime.

It is a super-2 number, since 2×71200019² = 10138885411200722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71200013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140459 + ... + 140964.

It is an arithmetic number, because the mean of its divisors is an integer number (10131264).

Almost surely, 2^71200019 is an apocalyptic number.

71200019 is a deficient number, since it is larger than the sum of its proper divisors (9850093).

71200019 is a wasteful number, since it uses less digits than its factorization.

71200019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281457.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 71200019 is about 8438.0103697495. The cubic root of 71200019 is about 414.4702564795.

The spelling of 71200019 in words is "seventy-one million, two hundred thousand, nineteen".