42131330 has 8 divisors (see below), whose sum is σ = 75836412. Its totient is φ = 16852528.

The previous prime is 42131281. The next prime is 42131347. The reversal of 42131330 is 3313124.

It is a happy number.

42131330 is nontrivially palindromic in base 9.

It can be written as a sum of positive squares in 2 ways, for example, as 37100281 + 5031049 = 6091^2 + 2243^2 .

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 = 42131299 and 42131308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2106557 + ... + 2106576.

Almost surely, 2^42131330 is an apocalyptic number.

42131330 is a deficient number, since it is larger than the sum of its proper divisors (33705082).

42131330 is a wasteful number, since it uses less digits than its factorization.

42131330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4213140.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 42131330 is about 6490.8651195353. The cubic root of 42131330 is about 347.9645943193.

Adding to 42131330 its reverse (3313124), we get a palindrome (45444454).

The spelling of 42131330 in words is "forty-two million, one hundred thirty-one thousand, three hundred thirty".