420202507 has 2 divisors, whose sum is σ = 420202508. Its totient is φ = 420202506.

The previous prime is 420202463. The next prime is 420202511. The reversal of 420202507 is 705202024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420202507 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (420202577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210101253 + 210101254.

It is an arithmetic number, because the mean of its divisors is an integer number (210101254).

Almost surely, 2^420202507 is an apocalyptic number.

420202507 is a deficient number, since it is larger than the sum of its proper divisors (1).

420202507 is an equidigital number, since it uses as much as digits as its factorization.

420202507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 420202507 is about 20498.8416014174. The cubic root of 420202507 is about 749.0075804208.

The spelling of 420202507 in words is "four hundred twenty million, two hundred two thousand, five hundred seven".