71125542 has 12 divisors (see below), whose sum is σ = 154105380. Its totient is φ = 23708508.

The previous prime is 71125489. The next prime is 71125543. The reversal of 71125542 is 24552117.

71125542 is a `hidden beast` number, since 7 + 112 + 5 + 542 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71125543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1975692 + ... + 1975727.

It is an arithmetic number, because the mean of its divisors is an integer number (12842115).

Almost surely, 2^71125542 is an apocalyptic number.

71125542 is an abundant number, since it is smaller than the sum of its proper divisors (82979838).

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

71125542 is a wasteful number, since it uses less digits than its factorization.

71125542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3951427 (or 3951424 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 71125542 is about 8433.5960301641. The cubic root of 71125542 is about 414.3256906444.

Adding to 71125542 its reverse (24552117), we get a palindrome (95677659).

The spelling of 71125542 in words is "seventy-one million, one hundred twenty-five thousand, five hundred forty-two".