42120007 has 2 divisors, whose sum is σ = 42120008. Its totient is φ = 42120006.

The previous prime is 42119993. The next prime is 42120049. The reversal of 42120007 is 70002124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42120007 - 2⁷ = 42119879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42121007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21060003 + 21060004.

It is an arithmetic number, because the mean of its divisors is an integer number (21060004).

Almost surely, 2^42120007 is an apocalyptic number.

42120007 is a deficient number, since it is larger than the sum of its proper divisors (1).

42120007 is an equidigital number, since it uses as much as digits as its factorization.

42120007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 42120007 is about 6489.9928351270. The cubic root of 42120007 is about 347.9334191335.

The spelling of 42120007 in words is "forty-two million, one hundred twenty thousand, seven".