42117506 has 8 divisors (see below), whose sum is σ = 63226764. Its totient is φ = 21041920.

The previous prime is 42117469. The next prime is 42117527. The reversal of 42117506 is 60571124.

It can be written as a sum of positive squares in 2 ways, for example, as 40132225 + 1985281 = 6335^2 + 1409^2 .

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

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, 5015 + ... + 10458.

Almost surely, 2^42117506 is an apocalyptic number.

42117506 is a deficient number, since it is larger than the sum of its proper divisors (21109258).

42117506 is a wasteful number, since it uses less digits than its factorization.

42117506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16836.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 42117506 is about 6489.8001510062. The cubic root of 42117506 is about 347.9265324719.

The spelling of 42117506 in words is "forty-two million, one hundred seventeen thousand, five hundred six".