42282731 has 2 divisors, whose sum is σ = 42282732. Its totient is φ = 42282730.

The previous prime is 42282703. The next prime is 42282833. The reversal of 42282731 is 13728224.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42282731 is a prime.

It is a super-2 number, since 2×42282731² = 3575658681636722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42282694 and 42282703.

It is not a weakly prime, because it can be changed into another prime (42282431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21141365 + 21141366.

It is an arithmetic number, because the mean of its divisors is an integer number (21141366).

Almost surely, 2^42282731 is an apocalyptic number.

42282731 is a deficient number, since it is larger than the sum of its proper divisors (1).

42282731 is an equidigital number, since it uses as much as digits as its factorization.

42282731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 29.

The square root of 42282731 is about 6502.5172817917. The cubic root of 42282731 is about 348.3809053154.

The spelling of 42282731 in words is "forty-two million, two hundred eighty-two thousand, seven hundred thirty-one".