42240707 has 2 divisors, whose sum is σ = 42240708. Its totient is φ = 42240706.

The previous prime is 42240703. The next prime is 42240727. The reversal of 42240707 is 70704224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42240707 - 2² = 42240703 is a prime.

It is not a weakly prime, because it can be changed into another prime (42240703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21120353 + 21120354.

It is an arithmetic number, because the mean of its divisors is an integer number (21120354).

Almost surely, 2^42240707 is an apocalyptic number.

42240707 is a deficient number, since it is larger than the sum of its proper divisors (1).

42240707 is an equidigital number, since it uses as much as digits as its factorization.

42240707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 42240707 is about 6499.2851145338. The cubic root of 42240707 is about 348.2654506782.

The spelling of 42240707 in words is "forty-two million, two hundred forty thousand, seven hundred seven".