420131 has 4 divisors (see below), whose sum is σ = 428112. Its totient is φ = 412152.

The previous prime is 420103. The next prime is 420149. The reversal of 420131 is 131024.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420131 is a prime.

It is a super-2 number, since 2×420131² = 353020114322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3911 + ... + 4016.

It is an arithmetic number, because the mean of its divisors is an integer number (107028).

2⁴²⁰¹³¹ is an apocalyptic number.

420131 is a deficient number, since it is larger than the sum of its proper divisors (7981).

420131 is an equidigital number, since it uses as much as digits as its factorization.

420131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7980.

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

The square root of 420131 is about 648.1751306553. The cubic root of 420131 is about 74.8965091127.

Adding to 420131 its reverse (131024), we get a palindrome (551155).

The spelling of 420131 in words is "four hundred twenty thousand, one hundred thirty-one".