42152534 has 4 divisors (see below), whose sum is σ = 63228804. Its totient is φ = 21076266.

The previous prime is 42152521. The next prime is 42152549. The reversal of 42152534 is 43525124.

It is a happy number.

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

It is a super-2 number, since 2×42152534² = 3553672245242312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10538132 + ... + 10538135.

It is an arithmetic number, because the mean of its divisors is an integer number (15807201).

Almost surely, 2^42152534 is an apocalyptic number.

42152534 is a deficient number, since it is larger than the sum of its proper divisors (21076270).

42152534 is a wasteful number, since it uses less digits than its factorization.

42152534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21076269.

The product of its digits is 4800, while the sum is 26.

The square root of 42152534 is about 6492.4982864842. The cubic root of 42152534 is about 348.0229594664.

Adding to 42152534 its reverse (43525124), we get a palindrome (85677658).

The spelling of 42152534 in words is "forty-two million, one hundred fifty-two thousand, five hundred thirty-four".