351684242 has 16 divisors (see below), whose sum is σ = 649263552. Its totient is φ = 139127760.

The previous prime is 351684227. The next prime is 351684257. The reversal of 351684242 is 242486153.

It is an interprime number because it is at equal distance from previous prime (351684227) and next prime (351684257).

It is a super-2 number, since 2×351684242² = 247363612142229128, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 965984 + ... + 966347.

It is an arithmetic number, because the mean of its divisors is an integer number (40578972).

Almost surely, 2^351684242 is an apocalyptic number.

351684242 is a deficient number, since it is larger than the sum of its proper divisors (297579310).

351684242 is a wasteful number, since it uses less digits than its factorization.

351684242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932353.

The product of its digits is 46080, while the sum is 35.

The square root of 351684242 is about 18753.2461723297. The cubic root of 351684242 is about 705.8584797136.

The spelling of 351684242 in words is "three hundred fifty-one million, six hundred eighty-four thousand, two hundred forty-two".