420000131 has 4 divisors (see below), whose sum is σ = 428936352. Its totient is φ = 411063912.

The previous prime is 420000109. The next prime is 420000137. The reversal of 420000131 is 131000024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420000131 - 2²⁶ = 352891267 is a prime.

It is a super-2 number, since 2×420000131² = 352800220080034322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420000137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4468040 + ... + 4468133.

It is an arithmetic number, because the mean of its divisors is an integer number (107234088).

Almost surely, 2^420000131 is an apocalyptic number.

420000131 is a deficient number, since it is larger than the sum of its proper divisors (8936221).

420000131 is an equidigital number, since it uses as much as digits as its factorization.

420000131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8936220.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 420000131 is about 20493.9047279917. The cubic root of 420000131 is about 748.8873165823.

Adding to 420000131 its reverse (131000024), we get a palindrome (551000155).

The spelling of 420000131 in words is "four hundred twenty million, one hundred thirty-one", and thus it is an aban number.