190420 has 12 divisors (see below), whose sum is σ = 399924. Its totient is φ = 76160.

The previous prime is 190409. The next prime is 190471. The reversal of 190420 is 24091.

It can be written as a sum of positive squares in 2 ways, for example, as 76176 + 114244 = 276^2 + 338^2 .

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 190394 and 190403.

It is a congruent number.

It is an unprimeable number.

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, 4741 + ... + 4780.

It is an arithmetic number, because the mean of its divisors is an integer number (33327).

2¹⁹⁰⁴²⁰ is an apocalyptic number.

190420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190420 is an abundant number, since it is smaller than the sum of its proper divisors (209504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

190420 is a wasteful number, since it uses less digits than its factorization.

190420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9530 (or 9528 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 190420 is about 436.3714014461. The cubic root of 190420 is about 57.5312999091.

It can be divided in two parts, 190 and 420, that multiplied together give a triangular number (79800 = T₃₉₉).

The spelling of 190420 in words is "one hundred ninety thousand, four hundred twenty".