42926731 has 2 divisors, whose sum is σ = 42926732. Its totient is φ = 42926730.

The previous prime is 42926711. The next prime is 42926743. The reversal of 42926731 is 13762924.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42926731 - 2⁷ = 42926603 is a prime.

It is a super-2 number, since 2×42926731² = 3685408468692722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42926711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21463365 + 21463366.

It is an arithmetic number, because the mean of its divisors is an integer number (21463366).

Almost surely, 2^42926731 is an apocalyptic number.

42926731 is a deficient number, since it is larger than the sum of its proper divisors (1).

42926731 is an equidigital number, since it uses as much as digits as its factorization.

42926731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 34.

The square root of 42926731 is about 6551.8494335569. The cubic root of 42926731 is about 350.1407080504.

The spelling of 42926731 in words is "forty-two million, nine hundred twenty-six thousand, seven hundred thirty-one".