42216007 has 2 divisors, whose sum is σ = 42216008.
Its totient is φ = 42216006.
The previous prime is 42215989. The next prime is 42216023. The reversal of 42216007 is 70061224.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 42216007 - 211 = 42213959 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (42216407) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21108003 + 21108004.
It is an arithmetic number, because the mean of its divisors is an integer number (21108004).
Almost surely, 242216007 is an apocalyptic number.
42216007 is a deficient number, since it is larger than the sum of its proper divisors (1).
42216007 is an equidigital number, since it uses as much as digits as its factorization.
42216007 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 672, while the sum is 22.
The square root of 42216007 is about 6497.3846276790.
The cubic root of 42216007 is about 348.1975553984.
The spelling of 42216007 in words is "forty-two million, two hundred sixteen thousand, seven".