420137071 has 2 divisors, whose sum is σ = 420137072. Its totient is φ = 420137070.

The previous prime is 420137059. The next prime is 420137077. The reversal of 420137071 is 170731024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420137071 - 2⁷ = 420136943 is a prime.

It is equal to p_22351336 and since 420137071 and 22351336 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420137077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210068535 + 210068536.

It is an arithmetic number, because the mean of its divisors is an integer number (210068536).

Almost surely, 2^420137071 is an apocalyptic number.

420137071 is a deficient number, since it is larger than the sum of its proper divisors (1).

420137071 is an equidigital number, since it uses as much as digits as its factorization.

420137071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 420137071 is about 20497.2454490841. The cubic root of 420137071 is about 748.9686986883.

Adding to 420137071 its reverse (170731024), we get a palindrome (590868095).

The spelling of 420137071 in words is "four hundred twenty million, one hundred thirty-seven thousand, seventy-one".