42870097 has 4 divisors (see below), whose sum is σ = 43867120. Its totient is φ = 41873076.

The previous prime is 42870089. The next prime is 42870101. The reversal of 42870097 is 79007824.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42870097 - 2³ = 42870089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42870067) 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 3 ways as a sum of consecutive naturals, for example, 498447 + ... + 498532.

It is an arithmetic number, because the mean of its divisors is an integer number (10966780).

Almost surely, 2^42870097 is an apocalyptic number.

It is an amenable number.

42870097 is a deficient number, since it is larger than the sum of its proper divisors (997023).

42870097 is an equidigital number, since it uses as much as digits as its factorization.

42870097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997022.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 42870097 is about 6547.5260213305. The cubic root of 42870097 is about 349.9866579948.

The spelling of 42870097 in words is "forty-two million, eight hundred seventy thousand, ninety-seven".