42691258 has 4 divisors (see below), whose sum is σ = 64036890. Its totient is φ = 21345628.

The previous prime is 42691249. The next prime is 42691361. The reversal of 42691258 is 85219624.

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., 42211009 + 480249 = 6497^2 + 693^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10672813 + ... + 10672816.

Almost surely, 2^42691258 is an apocalyptic number.

42691258 is a deficient number, since it is larger than the sum of its proper divisors (21345632).

42691258 is a wasteful number, since it uses less digits than its factorization.

42691258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21345631.

The product of its digits is 34560, while the sum is 37.

The square root of 42691258 is about 6533.8547581041. The cubic root of 42691258 is about 349.4993058399.

The spelling of 42691258 in words is "forty-two million, six hundred ninety-one thousand, two hundred fifty-eight".