It is a happy number.
It is a tau number, because it is divible by the number of its divisors (240).
It is a congruent number.
It is an unprimeable number.
Almost surely, 21422209520 is an apocalyptic number.
1422209520 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 1422209520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2481912576).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1422209520 is a wasteful number, since it uses less digits than its factorization.
1422209520 is an evil number, because the sum of its binary digits is even.
The square root of 1422209520 is about 37712.1932536415. The cubic root of 1422209520 is about 1124.5735390999.
The spelling of 1422209520 in words is "one billion, four hundred twenty-two million, two hundred nine thousand, five hundred twenty".