71421032 has 8 divisors (see below), whose sum is σ = 133914450. Its totient is φ = 35710512.

The previous prime is 71421023. The next prime is 71421047. The reversal of 71421032 is 23012417.

It can be written as a sum of positive squares in only one way, i.e., 62504836 + 8916196 = 7906^2 + 2986^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 71420995 and 71421013.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4463807 + ... + 4463822.

Almost surely, 2^71421032 is an apocalyptic number.

It is an amenable number.

71421032 is a deficient number, since it is larger than the sum of its proper divisors (62493418).

71421032 is a wasteful number, since it uses less digits than its factorization.

71421032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8927635 (or 8927631 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 71421032 is about 8451.0964969050. The cubic root of 71421032 is about 414.8986678611.

Adding to 71421032 its reverse (23012417), we get a palindrome (94433449).

The spelling of 71421032 in words is "seventy-one million, four hundred twenty-one thousand, thirty-two".