71402957 has 8 divisors (see below), whose sum is σ = 72303000. Its totient is φ = 70507584.

The previous prime is 71402953. The next prime is 71402963. The reversal of 71402957 is 75920417.

It can be written as a sum of positive squares in 4 ways, for example, as 28185481 + 43217476 = 5309^2 + 6574^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 71402957 - 2² = 71402953 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71402953) 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 7 ways as a sum of consecutive naturals, for example, 37103 + ... + 38979.

It is an arithmetic number, because the mean of its divisors is an integer number (9037875).

Almost surely, 2^71402957 is an apocalyptic number.

It is an amenable number.

71402957 is a deficient number, since it is larger than the sum of its proper divisors (900043).

71402957 is a wasteful number, since it uses less digits than its factorization.

71402957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2335.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 71402957 is about 8450.0270413768. The cubic root of 71402957 is about 414.8636645111.

The spelling of 71402957 in words is "seventy-one million, four hundred two thousand, nine hundred fifty-seven".