71421938 has 8 divisors (see below), whose sum is σ = 122437632. Its totient is φ = 30609396.

The previous prime is 71421937. The next prime is 71421941. The reversal of 71421938 is 83912417.

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

It is a junction number, because it is equal to n+sod(n) for n = 71421898 and 71421907.

It is not an unprimeable number, because it can be changed into a prime (71421937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2550770 + ... + 2550797.

It is an arithmetic number, because the mean of its divisors is an integer number (15304704).

Almost surely, 2^71421938 is an apocalyptic number.

71421938 is a deficient number, since it is larger than the sum of its proper divisors (51015694).

71421938 is a wasteful number, since it uses less digits than its factorization.

71421938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5101576.

The product of its digits is 12096, while the sum is 35.

The square root of 71421938 is about 8451.1500992468. The cubic root of 71421938 is about 414.9004222304.

The spelling of 71421938 in words is "seventy-one million, four hundred twenty-one thousand, nine hundred thirty-eight".