42628161 has 16 divisors (see below), whose sum is σ = 57723840. Its totient is φ = 27979200.

The previous prime is 42628133. The next prime is 42628171. The reversal of 42628161 is 16182624.

It is not a de Polignac number, because 42628161 - 2⁶ = 42628097 is a prime.

It is a super-2 number, since 2×42628161² = 3634320220483842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42628111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81246 + ... + 81768.

It is an arithmetic number, because the mean of its divisors is an integer number (3607740).

Almost surely, 2^42628161 is an apocalyptic number.

It is an amenable number.

42628161 is a deficient number, since it is larger than the sum of its proper divisors (15095679).

42628161 is a wasteful number, since it uses less digits than its factorization.

42628161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896.

The product of its digits is 4608, while the sum is 30.

The square root of 42628161 is about 6529.0245060039. The cubic root of 42628161 is about 349.3270361371.

The spelling of 42628161 in words is "forty-two million, six hundred twenty-eight thousand, one hundred sixty-one".