306435140642 has 8 divisors (see below), whose sum is σ = 460417525932. Its totient is φ = 152962632000.

The previous prime is 306435140639. The next prime is 306435140677. The reversal of 306435140642 is 246041534603.

It can be written as a sum of positive squares in 2 ways, for example, as 296035016281 + 10400124361 = 544091^2 + 101981^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 306435140596 and 306435140605.

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, 127467659 + ... + 127470062.

Almost surely, 2^306435140642 is an apocalyptic number.

306435140642 is a deficient number, since it is larger than the sum of its proper divisors (153982385290).

306435140642 is a wasteful number, since it uses less digits than its factorization.

306435140642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254938324.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 306435140642 in words is "three hundred six billion, four hundred thirty-five million, one hundred forty thousand, six hundred forty-two".