42387097 has 4 divisors (see below), whose sum is σ = 42508900.
Its totient is φ = 42265296.
The previous prime is 42387053. The next prime is 42387101. The reversal of 42387097 is 79078324.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 33884041 + 8503056 = 5821^2 + 2916^2
It is not a de Polignac number, because 42387097 - 215 = 42354329 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (42387197) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60378 + ... + 61075.
It is an arithmetic number, because the mean of its divisors is an integer number (10627225).
It is a 348-hyperperfect number.
Almost surely, 242387097 is an apocalyptic number.
It is an amenable number.
42387097 is a deficient number, since it is larger than the sum of its proper divisors (121803).
42387097 is a wasteful number, since it uses less digits than its factorization.
42387097 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 121802.
The product of its (nonzero) digits is 84672, while the sum is 40.
The square root of 42387097 is about 6510.5373818142.
The cubic root of 42387097 is about 348.6673047250.
The spelling of 42387097 in words is "forty-two million, three hundred eighty-seven thousand, ninety-seven".