71419402 has 12 divisors (see below), whose sum is σ = 110953206. Its totient is φ = 34477520.

The previous prime is 71419391. The next prime is 71419409. The reversal of 71419402 is 20491417.

It is a Cunningham number, because it is equal to 8451²+1.

It can be written as a sum of positive squares in 3 ways, for example, as 71419401 + 1 = 8451^2 + 1^2 .

It is not an unprimeable number, because it can be changed into a prime (71419409) 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, 19549 + ... + 22912.

Almost surely, 2^71419402 is an apocalyptic number.

71419402 is a deficient number, since it is larger than the sum of its proper divisors (39533804).

71419402 is a wasteful number, since it uses less digits than its factorization.

71419402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42521 (or 42492 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 71419402 is about 8451.0000591646. Note that the first 4 decimals coincide. The cubic root of 71419402 is about 414.8955115081.

The spelling of 71419402 in words is "seventy-one million, four hundred nineteen thousand, four hundred two".