42152522 has 4 divisors (see below), whose sum is σ = 63228786. Its totient is φ = 21076260.

The previous prime is 42152521. The next prime is 42152549. The reversal of 42152522 is 22525124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 33396841 + 8755681 = 5779^2 + 2959^2 .

It is a super-2 number, since 2×42152522² = 3553670221920968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42152521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10538129 + ... + 10538132.

Almost surely, 2^42152522 is an apocalyptic number.

42152522 is a deficient number, since it is larger than the sum of its proper divisors (21076264).

42152522 is a wasteful number, since it uses less digits than its factorization.

42152522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21076263.

The product of its digits is 1600, while the sum is 23.

The square root of 42152522 is about 6492.4973623406. The cubic root of 42152522 is about 348.0229264413.

Adding to 42152522 its reverse (22525124), we get a palindrome (64677646).

The spelling of 42152522 in words is "forty-two million, one hundred fifty-two thousand, five hundred twenty-two".