71246421 has 12 divisors (see below), whose sum is σ = 102997440. Its totient is φ = 47457960.

The previous prime is 71246419. The next prime is 71246431. The reversal of 71246421 is 12464217.

71246421 is a `hidden beast` number, since 7 + 12 + 4 + 642 + 1 = 666.

It is not a de Polignac number, because 71246421 - 2¹ = 71246419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71246431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11620 + ... + 16658.

It is an arithmetic number, because the mean of its divisors is an integer number (8583120).

Almost surely, 2^71246421 is an apocalyptic number.

It is an amenable number.

71246421 is a deficient number, since it is larger than the sum of its proper divisors (31751019).

71246421 is a wasteful number, since it uses less digits than its factorization.

71246421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6616 (or 6613 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 71246421 is about 8440.7595037414. The cubic root of 71246421 is about 414.5602755210.

The spelling of 71246421 in words is "seventy-one million, two hundred forty-six thousand, four hundred twenty-one".