1995420 has 48 divisors (see below), whose sum is σ = 6386688. Its totient is φ = 456000.

The previous prime is 1995391. The next prime is 1995421. The reversal of 1995420 is 245991.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1956 + ... + 2795.

It is an arithmetic number, because the mean of its divisors is an integer number (133056).

2^1995420 is an apocalyptic number.

1995420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1995420 is an abundant number, since it is smaller than the sum of its proper divisors (4391268).

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

1995420 is a wasteful number, since it uses less digits than its factorization.

1995420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4770 (or 4768 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1995420 is about 1412.5933597465. The cubic root of 1995420 is about 125.8958575097.

It can be divided in two parts, 1995 and 420, that added together give a triangular number (2415 = T₆₉).

The spelling of 1995420 in words is "one million, nine hundred ninety-five thousand, four hundred twenty".