422520720 has 160 divisors (see below), whose sum is σ = 1435086720. Its totient is φ = 102359040.

The previous prime is 422520701. The next prime is 422520739. The reversal of 422520720 is 27025224.

It is an interprime number because it is at equal distance from previous prime (422520701) and next prime (422520739).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116535 + ... + 120105.

It is an arithmetic number, because the mean of its divisors is an integer number (8969292).

Almost surely, 2^422520720 is an apocalyptic number.

422520720 is a gapful number since it is divisible by the number (40) 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 422520720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (717543360).

422520720 is an abundant number, since it is smaller than the sum of its proper divisors (1012566000).

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

422520720 is a wasteful number, since it uses less digits than its factorization.

422520720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3633 (or 3627 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 422520720 is about 20555.3088033238. The cubic root of 422520720 is about 750.3824538278.

Adding to 422520720 its reverse (27025224), we get a palindrome (449545944).

The spelling of 422520720 in words is "four hundred twenty-two million, five hundred twenty thousand, seven hundred twenty".