42167138 has 16 divisors (see below), whose sum is σ = 68225976. Its totient is φ = 19430400.

The previous prime is 42167117. The next prime is 42167159. The reversal of 42167138 is 83176124.

It is an interprime number because it is at equal distance from previous prime (42167117) and next prime (42167159).

It can be written as a sum of positive squares in 4 ways, for example, as 29084449 + 13082689 = 5393^2 + 3617^2 .

It is a super-2 number, since 2×42167138² = 3556135054222088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25538 + ... + 27138.

Almost surely, 2^42167138 is an apocalyptic number.

42167138 is a deficient number, since it is larger than the sum of its proper divisors (26058838).

42167138 is a wasteful number, since it uses less digits than its factorization.

42167138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2629.

The product of its digits is 8064, while the sum is 32.

The square root of 42167138 is about 6493.6228717104. The cubic root of 42167138 is about 348.0631463779.

The spelling of 42167138 in words is "forty-two million, one hundred sixty-seven thousand, one hundred thirty-eight".