71150421 has 8 divisors (see below), whose sum is σ = 99860320. Its totient is φ = 44937072.

The previous prime is 71150419. The next prime is 71150467. The reversal of 71150421 is 12405117.

It is a happy number.

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

It is not a de Polignac number, because 71150421 - 2¹ = 71150419 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 (71190421) 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, 624070 + ... + 624183.

It is an arithmetic number, because the mean of its divisors is an integer number (12482540).

Almost surely, 2^71150421 is an apocalyptic number.

It is an amenable number.

71150421 is a deficient number, since it is larger than the sum of its proper divisors (28709899).

71150421 is a wasteful number, since it uses less digits than its factorization.

71150421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248275.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 71150421 is about 8435.0708947821. The cubic root of 71150421 is about 414.3739940008.

Adding to 71150421 its reverse (12405117), we get a palindrome (83555538).

The spelling of 71150421 in words is "seventy-one million, one hundred fifty thousand, four hundred twenty-one".