42659138 has 4 divisors (see below), whose sum is σ = 63988710. Its totient is φ = 21329568.

The previous prime is 42659129. The next prime is 42659153. The reversal of 42659138 is 83195624.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 41692849 + 966289 = 6457^2 + 983^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10664783 + ... + 10664786.

Almost surely, 2^42659138 is an apocalyptic number.

42659138 is a deficient number, since it is larger than the sum of its proper divisors (21329572).

42659138 is a wasteful number, since it uses less digits than its factorization.

42659138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21329571.

The product of its digits is 51840, while the sum is 38.

The square root of 42659138 is about 6531.3963285043. The cubic root of 42659138 is about 349.4116318851.

The spelling of 42659138 in words is "forty-two million, six hundred fifty-nine thousand, one hundred thirty-eight".