420522192 has 140 divisors (see below), whose sum is σ = 1262073984. Its totient is φ = 135535680.

The previous prime is 420522143. The next prime is 420522197. The reversal of 420522192 is 291225024.

It is a happy number.

420522192 is a `hidden beast` number, since 420 + 52 + 2 + 192 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420522197) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 361003 + ... + 362165.

Almost surely, 2^420522192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420522192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (631036992).

420522192 is an abundant number, since it is smaller than the sum of its proper divisors (841551792).

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

420522192 is a wasteful number, since it uses less digits than its factorization.

420522192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220 (or 1199 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 420522192 is about 20506.6377546393. The cubic root of 420522192 is about 749.1974775833.

It can be divided in two parts, 42052 and 2192, that added together give a palindrome (44244).

The spelling of 420522192 in words is "four hundred twenty million, five hundred twenty-two thousand, one hundred ninety-two".