42689155 has 8 divisors (see below), whose sum is σ = 52095600. Its totient is φ = 33572256.

The previous prime is 42689149. The next prime is 42689161. The reversal of 42689155 is 55198624.

It is an interprime number because it is at equal distance from previous prime (42689149) and next prime (42689161).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42689155 - 2³ = 42689147 is a prime.

It is a super-3 number, since 3×42689155³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

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, 72060 + ... + 72649.

It is an arithmetic number, because the mean of its divisors is an integer number (6511950).

Almost surely, 2^42689155 is an apocalyptic number.

42689155 is a deficient number, since it is larger than the sum of its proper divisors (9406445).

42689155 is a wasteful number, since it uses less digits than its factorization.

42689155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144773.

The product of its digits is 86400, while the sum is 40.

The square root of 42689155 is about 6533.6938250885. The cubic root of 42689155 is about 349.4935668889.

The spelling of 42689155 in words is "forty-two million, six hundred eighty-nine thousand, one hundred fifty-five".