1420920 has 48 divisors (see below), whose sum is σ = 4619160. Its totient is φ = 378816.

The previous prime is 1420919. The next prime is 1420921. The reversal of 1420920 is 290241.

It is an interprime number because it is at equal distance from previous prime (1420919) and next prime (1420921).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1420893 and 1420902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1614 + ... + 2333.

2^1420920 is an apocalyptic number.

1420920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420920 is an abundant number, since it is smaller than the sum of its proper divisors (3198240).

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

1420920 is a wasteful number, since it uses less digits than its factorization.

1420920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3964 (or 3957 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1420920 is about 1192.0234897014. The cubic root of 1420920 is about 112.4233552022.

The spelling of 1420920 in words is "one million, four hundred twenty thousand, nine hundred twenty".