42689698 has 16 divisors (see below), whose sum is σ = 65452536. Its totient is φ = 20874880.

The previous prime is 42689693. The next prime is 42689719. The reversal of 42689698 is 89698624.

It can be written as a sum of positive squares in 4 ways, for example, as 26904969 + 15784729 = 5187^2 + 3973^2 .

It is a super-3 number, since 3×42689698³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42689693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54840 + ... + 55612.

Almost surely, 2^42689698 is an apocalyptic number.

42689698 is a deficient number, since it is larger than the sum of its proper divisors (22762838).

42689698 is a wasteful number, since it uses less digits than its factorization.

42689698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349.

The product of its digits is 1492992, while the sum is 52.

The square root of 42689698 is about 6533.7353787860. The cubic root of 42689698 is about 349.4950487188.

The spelling of 42689698 in words is "forty-two million, six hundred eighty-nine thousand, six hundred ninety-eight".