42117650 has 12 divisors (see below), whose sum is σ = 78338922. Its totient is φ = 16847040.

The previous prime is 42117643. The next prime is 42117659. The reversal of 42117650 is 5671124.

It can be written as a sum of positive squares in 3 ways, for example, as 39450961 + 2666689 = 6281^2 + 1633^2 .

It is not an unprimeable number, because it can be changed into a prime (42117659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 421127 + ... + 421226.

Almost surely, 2^42117650 is an apocalyptic number.

42117650 is a deficient number, since it is larger than the sum of its proper divisors (36221272).

42117650 is a wasteful number, since it uses less digits than its factorization.

42117650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842365 (or 842360 counting only the distinct ones).

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

The square root of 42117650 is about 6489.8112453291. The cubic root of 42117650 is about 347.9269289924.

Adding to 42117650 its reverse (5671124), we get a palindrome (47788774).

The spelling of 42117650 in words is "forty-two million, one hundred seventeen thousand, six hundred fifty".