42649007 has 2 divisors, whose sum is σ = 42649008. Its totient is φ = 42649006.

The previous prime is 42649003. The next prime is 42649037. The reversal of 42649007 is 70094624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42649007 - 2² = 42649003 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42649001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21324503 + 21324504.

It is an arithmetic number, because the mean of its divisors is an integer number (21324504).

Almost surely, 2^42649007 is an apocalyptic number.

42649007 is a deficient number, since it is larger than the sum of its proper divisors (1).

42649007 is an equidigital number, since it uses as much as digits as its factorization.

42649007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 42649007 is about 6530.6207208810. The cubic root of 42649007 is about 349.3839694297.

The spelling of 42649007 in words is "forty-two million, six hundred forty-nine thousand, seven".