71421297 has 8 divisors (see below), whose sum is σ = 95608800. Its totient is φ = 47424000.

The previous prime is 71421289. The next prime is 71421307. The reversal of 71421297 is 79212417.

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

It is not a de Polignac number, because 71421297 - 2³ = 71421289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71421227) 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, 46672 + ... + 48177.

It is an arithmetic number, because the mean of its divisors is an integer number (11951100).

Almost surely, 2^71421297 is an apocalyptic number.

It is an amenable number.

71421297 is a deficient number, since it is larger than the sum of its proper divisors (24187503).

71421297 is a wasteful number, since it uses less digits than its factorization.

71421297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95103.

The product of its digits is 7056, while the sum is 33.

The square root of 71421297 is about 8451.1121753294. The cubic root of 71421297 is about 414.8991810060.

The spelling of 71421297 in words is "seventy-one million, four hundred twenty-one thousand, two hundred ninety-seven".