42165640346 has 8 divisors (see below), whose sum is σ = 63332014260. Its totient is φ = 21054968928.

The previous prime is 42165640289. The next prime is 42165640381. The reversal of 42165640346 is 64304656124.

It can be written as a sum of positive squares in 2 ways, for example, as 42082009321 + 83631025 = 205139^2 + 9145^2 .

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, 13923731 + ... + 13926758.

Almost surely, 2^42165640346 is an apocalyptic number.

42165640346 is a deficient number, since it is larger than the sum of its proper divisors (21166373914).

42165640346 is a wasteful number, since it uses less digits than its factorization.

42165640346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27851248.

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 42165640346 in words is "forty-two billion, one hundred sixty-five million, six hundred forty thousand, three hundred forty-six".