42650071 has 2 divisors, whose sum is σ = 42650072. Its totient is φ = 42650070.

The previous prime is 42650057. The next prime is 42650077. The reversal of 42650071 is 17005624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42650071 - 2²³ = 34261463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42650077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21325035 + 21325036.

It is an arithmetic number, because the mean of its divisors is an integer number (21325036).

Almost surely, 2^42650071 is an apocalyptic number.

42650071 is a deficient number, since it is larger than the sum of its proper divisors (1).

42650071 is an equidigital number, since it uses as much as digits as its factorization.

42650071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 42650071 is about 6530.7021827672. The cubic root of 42650071 is about 349.3868748624.

Adding to 42650071 its reverse (17005624), we get a palindrome (59655695).

It can be divided in two parts, 426 and 50071, that multiplied together give a triangular number (21330246 = T₆₅₃₁).

The spelling of 42650071 in words is "forty-two million, six hundred fifty thousand, seventy-one".