1422520 has 64 divisors (see below), whose sum is σ = 3615840. Its totient is φ = 499200.

The previous prime is 1422493. The next prime is 1422521. The reversal of 1422520 is 252241.

It is a junction number, because it is equal to n+sod(n) for n = 1422494 and 1422503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422521) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 23290 + ... + 23350.

2^1422520 is an apocalyptic number.

1422520 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 1422520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1807920).

1422520 is an abundant number, since it is smaller than the sum of its proper divisors (2193320).

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

1422520 is a wasteful number, since it uses less digits than its factorization.

1422520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 1422520 is about 1192.6944285943. The cubic root of 1422520 is about 112.4655367687.

Adding to 1422520 its reverse (252241), we get a palindrome (1674761).

It can be divided in two parts, 142 and 2520, that added together give a palindrome (2662).

The spelling of 1422520 in words is "one million, four hundred twenty-two thousand, five hundred twenty".