42091306 has 8 divisors (see below), whose sum is σ = 63170820. Its totient is φ = 21034368.

The previous prime is 42091277. The next prime is 42091319. The reversal of 42091306 is 60319024.

It can be written as a sum of positive squares in 2 ways, for example, as 33535681 + 8555625 = 5791^2 + 2925^2 .

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, 250 + ... + 9178.

Almost surely, 2^42091306 is an apocalyptic number.

42091306 is a deficient number, since it is larger than the sum of its proper divisors (21079514).

42091306 is a wasteful number, since it uses less digits than its factorization.

42091306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11288.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 42091306 is about 6487.7812848462. The cubic root of 42091306 is about 347.8543727228.

The spelling of 42091306 in words is "forty-two million, ninety-one thousand, three hundred six".