42002507 has 2 divisors, whose sum is σ = 42002508. Its totient is φ = 42002506.

The previous prime is 42002459. The next prime is 42002509. The reversal of 42002507 is 70520024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42002507 is a prime.

Together with 42002509, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42002509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21001253 + 21001254.

It is an arithmetic number, because the mean of its divisors is an integer number (21001254).

Almost surely, 2^42002507 is an apocalyptic number.

42002507 is a deficient number, since it is larger than the sum of its proper divisors (1).

42002507 is an equidigital number, since it uses as much as digits as its factorization.

42002507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 42002507 is about 6480.9341147708. The cubic root of 42002507 is about 347.6095805406.

The spelling of 42002507 in words is "forty-two million, two thousand, five hundred seven".