42398306 has 8 divisors (see below), whose sum is σ = 67338540. Its totient is φ = 19952128.

The previous prime is 42398303. The next prime is 42398333. The reversal of 42398306 is 60389324.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42133081 + 265225 = 6491^2 + 515^2 .

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

It is not an unprimeable number, because it can be changed into a prime (42398303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623471 + ... + 623538.

Almost surely, 2^42398306 is an apocalyptic number.

42398306 is a deficient number, since it is larger than the sum of its proper divisors (24940234).

42398306 is a wasteful number, since it uses less digits than its factorization.

42398306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247028.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 42398306 is about 6511.3981601496. The cubic root of 42398306 is about 348.6980363049.

The spelling of 42398306 in words is "forty-two million, three hundred ninety-eight thousand, three hundred six".