42689626 has 16 divisors (see below), whose sum is σ = 74885184. Its totient is φ = 17869824.

The previous prime is 42689623. The next prime is 42689629. The reversal of 42689626 is 62698624.

It is an interprime number because it is at equal distance from previous prime (42689623) and next prime (42689629).

It is a super-3 number, since 3×42689626³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (42689623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34855 + ... + 36058.

It is an arithmetic number, because the mean of its divisors is an integer number (4680324).

Almost surely, 2^42689626 is an apocalyptic number.

42689626 is a deficient number, since it is larger than the sum of its proper divisors (32195558).

42689626 is a wasteful number, since it uses less digits than its factorization.

42689626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70965.

The product of its digits is 248832, while the sum is 43.

The square root of 42689626 is about 6533.7298689187. The cubic root of 42689626 is about 349.4948522338.

The spelling of 42689626 in words is "forty-two million, six hundred eighty-nine thousand, six hundred twenty-six".