42102522 has 96 divisors (see below), whose sum is σ = 116947584. Its totient is φ = 10627200.

The previous prime is 42102521. The next prime is 42102527. The reversal of 42102522 is 22520124.

42102522 is a `hidden beast` number, since 42 + 102 + 522 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 42102495 and 42102504.

It is not an unprimeable number, because it can be changed into a prime (42102521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50872 + ... + 51692.

It is an arithmetic number, because the mean of its divisors is an integer number (1218204).

Almost surely, 2^42102522 is an apocalyptic number.

42102522 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 42102522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58473792).

42102522 is an abundant number, since it is smaller than the sum of its proper divisors (74845062).

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

42102522 is a wasteful number, since it uses less digits than its factorization.

42102522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884 (or 881 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 42102522 is about 6488.6456213913. The cubic root of 42102522 is about 347.8852673700.

Adding to 42102522 its reverse (22520124), we get a palindrome (64622646).

It can be divided in two parts, 42102 and 522, that added together give a palindrome (42624).

The spelling of 42102522 in words is "forty-two million, one hundred two thousand, five hundred twenty-two".