71242426 has 8 divisors (see below), whose sum is σ = 107965620. Its totient is φ = 35253888.

The previous prime is 71242421. The next prime is 71242439. The reversal of 71242426 is 62424217.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 59675625 + 11566801 = 7725^2 + 3401^2 .

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 = 71242394 and 71242403.

It is not an unprimeable number, because it can be changed into a prime (71242421) 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, 183421 + ... + 183808.

Almost surely, 2^71242426 is an apocalyptic number.

71242426 is a deficient number, since it is larger than the sum of its proper divisors (36723194).

71242426 is a wasteful number, since it uses less digits than its factorization.

71242426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367328.

The product of its digits is 5376, while the sum is 28.

The square root of 71242426 is about 8440.5228511035. The cubic root of 71242426 is about 414.5525268311.

The spelling of 71242426 in words is "seventy-one million, two hundred forty-two thousand, four hundred twenty-six".