3509500042 has 8 divisors (see below), whose sum is σ = 5392646532. Its totient is φ = 1711951200.

The previous prime is 3509500019. The next prime is 3509500067. The reversal of 3509500042 is 2400059053.

It can be written as a sum of positive squares in 2 ways, for example, as 3496475161 + 13024881 = 59131^2 + 3609^2 .

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, 21399309 + ... + 21399472.

Almost surely, 2^3509500042 is an apocalyptic number.

3509500042 is a deficient number, since it is larger than the sum of its proper divisors (1883146490).

3509500042 is a wasteful number, since it uses less digits than its factorization.

3509500042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42798824.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 3509500042 is about 59241.0334312291. The cubic root of 3509500042 is about 1519.6669460150. Note that the first 3 decimals are identical.

Adding to 3509500042 its reverse (2400059053), we get a palindrome (5909559095).

The spelling of 3509500042 in words is "three billion, five hundred nine million, five hundred thousand, forty-two".