286420442 has 32 divisors (see below), whose sum is σ = 537698304. Its totient is φ = 111164400.

The previous prime is 286420429. The next prime is 286420447. The reversal of 286420442 is 244024682.

It is a junction number, because it is equal to n+sod(n) for n = 286420399 and 286420408.

It is not an unprimeable number, because it can be changed into a prime (286420447) 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, 38303 + ... + 45165.

It is an arithmetic number, because the mean of its divisors is an integer number (16803072).

Almost surely, 2^286420442 is an apocalyptic number.

286420442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

286420442 is a deficient number, since it is larger than the sum of its proper divisors (251277862).

286420442 is a wasteful number, since it uses less digits than its factorization.

286420442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7154.

The product of its (nonzero) digits is 24576, while the sum is 32.

The square root of 286420442 is about 16923.9605884675. The cubic root of 286420442 is about 659.1759243498.

The spelling of 286420442 in words is "two hundred eighty-six million, four hundred twenty thousand, four hundred forty-two".