71121950 has 12 divisors (see below), whose sum is σ = 132286920. Its totient is φ = 28448760.

The previous prime is 71121901. The next prime is 71121961. The reversal of 71121950 is 5912117.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 711170 + ... + 711269.

It is an arithmetic number, because the mean of its divisors is an integer number (11023910).

Almost surely, 2^71121950 is an apocalyptic number.

71121950 is a deficient number, since it is larger than the sum of its proper divisors (61164970).

71121950 is a wasteful number, since it uses less digits than its factorization.

71121950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422451 (or 1422446 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 71121950 is about 8433.3830696821. The cubic root of 71121950 is about 414.3187157336.

The spelling of 71121950 in words is "seventy-one million, one hundred twenty-one thousand, nine hundred fifty".