42406747 has 2 divisors, whose sum is σ = 42406748. Its totient is φ = 42406746.

The previous prime is 42406723. The next prime is 42406757. The reversal of 42406747 is 74760424.

42406747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42406747 - 2¹⁹ = 41882459 is a prime.

It is a super-2 number, since 2×42406747² = 3596664382244018, which contains 22 as substring.

It is equal to p_2570848 and since 42406747 and 2570848 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (42406757) 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 as a sum of consecutive naturals, namely, 21203373 + 21203374.

It is an arithmetic number, because the mean of its divisors is an integer number (21203374).

Almost surely, 2^42406747 is an apocalyptic number.

42406747 is a deficient number, since it is larger than the sum of its proper divisors (1).

42406747 is an equidigital number, since it uses as much as digits as its factorization.

42406747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 34.

The square root of 42406747 is about 6512.0462989755. The cubic root of 42406747 is about 348.7211753175.

The spelling of 42406747 in words is "forty-two million, four hundred six thousand, seven hundred forty-seven".