71900123 has 8 divisors (see below), whose sum is σ = 80136720. Its totient is φ = 64108800.

The previous prime is 71900117. The next prime is 71900137. The reversal of 71900123 is 32100917.

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

It is a cyclic number.

It is not a de Polignac number, because 71900123 - 2⁴ = 71900107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71900723) 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, 110978 + ... + 111623.

It is an arithmetic number, because the mean of its divisors is an integer number (10017090).

Almost surely, 2^71900123 is an apocalyptic number.

71900123 is a deficient number, since it is larger than the sum of its proper divisors (8236597).

71900123 is a wasteful number, since it uses less digits than its factorization.

71900123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222637.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 71900123 is about 8479.3940231599. The cubic root of 71900123 is about 415.8243121386.

The spelling of 71900123 in words is "seventy-one million, nine hundred thousand, one hundred twenty-three".