42689097 has 12 divisors (see below), whose sum is σ = 67267824. Its totient is φ = 25872120.

The previous prime is 42689051. The next prime is 42689099. The reversal of 42689097 is 79098624.

It is a happy number.

It is not a de Polignac number, because 42689097 - 2⁶ = 42689033 is a prime.

It is a super-3 number, since 3×42689097³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42689099) 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 11 ways as a sum of consecutive naturals, for example, 215503 + ... + 215700.

It is an arithmetic number, because the mean of its divisors is an integer number (5605652).

Almost surely, 2^42689097 is an apocalyptic number.

It is an amenable number.

42689097 is a deficient number, since it is larger than the sum of its proper divisors (24578727).

42689097 is a wasteful number, since it uses less digits than its factorization.

42689097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431220 (or 431217 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 42689097 is about 6533.6893865564. The cubic root of 42689097 is about 349.4934086080.

The spelling of 42689097 in words is "forty-two million, six hundred eighty-nine thousand, ninety-seven".