282661421 has 16 divisors (see below), whose sum is σ = 345316608. Its totient is φ = 226089600.

The previous prime is 282661417. The next prime is 282661433. The reversal of 282661421 is 124166282.

It is a cyclic number.

It is not a de Polignac number, because 282661421 - 2² = 282661417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (282661411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14810 + ... + 28011.

It is an arithmetic number, because the mean of its divisors is an integer number (21582288).

Almost surely, 2^282661421 is an apocalyptic number.

It is an amenable number.

282661421 is a deficient number, since it is larger than the sum of its proper divisors (62655187).

282661421 is a wasteful number, since it uses less digits than its factorization.

282661421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42892.

The product of its digits is 9216, while the sum is 32.

The square root of 282661421 is about 16812.5376133408. The cubic root of 282661421 is about 656.2795112231.

The spelling of 282661421 in words is "two hundred eighty-two million, six hundred sixty-one thousand, four hundred twenty-one".