415138642 has 8 divisors (see below), whose sum is σ = 623113596. Its totient is φ = 207434112.

The previous prime is 415138637. The next prime is 415138649. The reversal of 415138642 is 246831514.

It can be written as a sum of positive squares in 2 ways, for example, as 277522281 + 137616361 = 16659^2 + 11731^2 .

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 = 415138598 and 415138607.

It is not an unprimeable number, because it can be changed into a prime (415138649) 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, 63723 + ... + 69934.

Almost surely, 2^415138642 is an apocalyptic number.

415138642 is a deficient number, since it is larger than the sum of its proper divisors (207974954).

415138642 is a wasteful number, since it uses less digits than its factorization.

415138642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135212.

The product of its digits is 23040, while the sum is 34.

The square root of 415138642 is about 20374.9513373652. The cubic root of 415138642 is about 745.9866464462.

The spelling of 415138642 in words is "four hundred fifteen million, one hundred thirty-eight thousand, six hundred forty-two".