71953442 has 32 divisors (see below), whose sum is σ = 121480128. Its totient is φ = 31680000.

The previous prime is 71953439. The next prime is 71953457. The reversal of 71953442 is 24435917.

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 15 ways as a sum of consecutive naturals, for example, 217217 + ... + 217547.

It is an arithmetic number, because the mean of its divisors is an integer number (3796254).

Almost surely, 2^71953442 is an apocalyptic number.

71953442 is a deficient number, since it is larger than the sum of its proper divisors (49526686).

71953442 is a wasteful number, since it uses less digits than its factorization.

71953442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626.

The product of its digits is 30240, while the sum is 35.

The square root of 71953442 is about 8482.5374741288. The cubic root of 71953442 is about 415.9270744024.

The spelling of 71953442 in words is "seventy-one million, nine hundred fifty-three thousand, four hundred forty-two".