42166751 has 8 divisors (see below), whose sum is σ = 48000384. Its totient is φ = 36666520.

The previous prime is 42166723. The next prime is 42166753. The reversal of 42166751 is 15766124.

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

It is not a de Polignac number, because 42166751 - 2¹⁸ = 41904607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42166753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83081 + ... + 83586.

It is an arithmetic number, because the mean of its divisors is an integer number (6000048).

Almost surely, 2^42166751 is an apocalyptic number.

42166751 is a deficient number, since it is larger than the sum of its proper divisors (5833633).

42166751 is a wasteful number, since it uses less digits than its factorization.

42166751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166701.

The product of its digits is 10080, while the sum is 32.

The square root of 42166751 is about 6493.5930731761. The cubic root of 42166751 is about 348.0620815609.

The spelling of 42166751 in words is "forty-two million, one hundred sixty-six thousand, seven hundred fifty-one".