71042045 has 8 divisors (see below), whose sum is σ = 89737440. Its totient is φ = 53842320.

The previous prime is 71042039. The next prime is 71042047. The reversal of 71042045 is 54024017.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71042045 - 2⁶ = 71041981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71042045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71042047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373811 + ... + 374000.

It is an arithmetic number, because the mean of its divisors is an integer number (11217180).

Almost surely, 2^71042045 is an apocalyptic number.

It is an amenable number.

71042045 is a deficient number, since it is larger than the sum of its proper divisors (18695395).

71042045 is a wasteful number, since it uses less digits than its factorization.

71042045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747835.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 71042045 is about 8428.6443156655. The cubic root of 71042045 is about 414.1634962226.

The spelling of 71042045 in words is "seventy-one million, forty-two thousand, forty-five".