71123154 has 16 divisors (see below), whose sum is σ = 143552640. Its totient is φ = 23490000.

The previous prime is 71123149. The next prime is 71123177. The reversal of 71123154 is 45132117.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53722 + ... + 55029.

It is an arithmetic number, because the mean of its divisors is an integer number (8972040).

Almost surely, 2^71123154 is an apocalyptic number.

71123154 is an abundant number, since it is smaller than the sum of its proper divisors (72429486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71123154 is a wasteful number, since it uses less digits than its factorization.

71123154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108865.

The product of its digits is 840, while the sum is 24.

The square root of 71123154 is about 8433.4544523582. The cubic root of 71123154 is about 414.3210536753.

The spelling of 71123154 in words is "seventy-one million, one hundred twenty-three thousand, one hundred fifty-four".