42131522 has 8 divisors (see below), whose sum is σ = 63374400. Its totient is φ = 21006724.

The previous prime is 42131521. The next prime is 42131527. The reversal of 42131522 is 22513124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 42131494 and 42131503.

It is not an unprimeable number, because it can be changed into a prime (42131521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28622 + ... + 30057.

It is an arithmetic number, because the mean of its divisors is an integer number (7921800).

Almost surely, 2^42131522 is an apocalyptic number.

42131522 is a deficient number, since it is larger than the sum of its proper divisors (21242878).

42131522 is a wasteful number, since it uses less digits than its factorization.

42131522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59040.

The product of its digits is 480, while the sum is 20.

The square root of 42131522 is about 6490.8799095346. The cubic root of 42131522 is about 347.9651228974.

Adding to 42131522 its reverse (22513124), we get a palindrome (64644646).

The spelling of 42131522 in words is "forty-two million, one hundred thirty-one thousand, five hundred twenty-two".