1407420 has 72 divisors (see below), whose sum is σ = 4883424. Its totient is φ = 321408.

The previous prime is 1407409. The next prime is 1407449. The reversal of 1407420 is 247041.

It is a happy number.

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

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1407393 and 1407402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 702 + ... + 1818.

2^1407420 is an apocalyptic number.

1407420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1407420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2441712).

1407420 is an abundant number, since it is smaller than the sum of its proper divisors (3476004).

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

1407420 is a wasteful number, since it uses less digits than its factorization.

1407420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139 (or 1134 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 1407420 is about 1186.3473353112. The cubic root of 1407420 is about 112.0661811238.

The spelling of 1407420 in words is "one million, four hundred seven thousand, four hundred twenty".