71431426 has 8 divisors (see below), whose sum is σ = 116887824. Its totient is φ = 32468820.

The previous prime is 71431421. The next prime is 71431429. The reversal of 71431426 is 62413417.

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 = 71431394 and 71431403.

It is not an unprimeable number, because it can be changed into a prime (71431421) 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, 1623420 + ... + 1623463.

It is an arithmetic number, because the mean of its divisors is an integer number (14610978).

Almost surely, 2^71431426 is an apocalyptic number.

71431426 is a deficient number, since it is larger than the sum of its proper divisors (45456398).

71431426 is a wasteful number, since it uses less digits than its factorization.

71431426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246896.

The product of its digits is 4032, while the sum is 28.

The square root of 71431426 is about 8451.7114243211. The cubic root of 71431426 is about 414.9187938074.

Subtracting from 71431426 its reverse (62413417), we obtain a square (9018009 = 3003²).

The spelling of 71431426 in words is "seventy-one million, four hundred thirty-one thousand, four hundred twenty-six".