71442125 has 16 divisors (see below), whose sum is σ = 89412336. Its totient is φ = 56992000.

The previous prime is 71442113. The next prime is 71442157. The reversal of 71442125 is 52124417.

It can be written as a sum of positive squares in 8 ways, for example, as 38700841 + 32741284 = 6221^2 + 5722^2 .

It is not a de Polignac number, because 71442125 - 2⁸ = 71441869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71442094 and 71442103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64577 + ... + 65673.

It is an arithmetic number, because the mean of its divisors is an integer number (5588271).

Almost surely, 2^71442125 is an apocalyptic number.

It is an amenable number.

71442125 is a deficient number, since it is larger than the sum of its proper divisors (17970211).

71442125 is a wasteful number, since it uses less digits than its factorization.

71442125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633 (or 1623 counting only the distinct ones).

The product of its digits is 2240, while the sum is 26.

The square root of 71442125 is about 8452.3443493507. The cubic root of 71442125 is about 414.9395082875.

The spelling of 71442125 in words is "seventy-one million, four hundred forty-two thousand, one hundred twenty-five".