71387043 has 32 divisors (see below), whose sum is σ = 118272000. Its totient is φ = 37293696.

The previous prime is 71387011. The next prime is 71387051. The reversal of 71387043 is 34078317.

It is not a de Polignac number, because 71387043 - 2⁵ = 71387011 is a prime.

It is a super-2 number, since 2×71387043² = 10192219816567698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71386995 and 71387013.

It is not an unprimeable number, because it can be changed into a prime (71387143) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 28558 + ... + 30956.

It is an arithmetic number, because the mean of its divisors is an integer number (3696000).

Almost surely, 2^71387043 is an apocalyptic number.

71387043 is a deficient number, since it is larger than the sum of its proper divisors (46884957).

71387043 is a wasteful number, since it uses less digits than its factorization.

71387043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2531.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 71387043 is about 8449.0853351117. The cubic root of 71387043 is about 414.8328411802.

The spelling of 71387043 in words is "seventy-one million, three hundred eighty-seven thousand, forty-three".