42987029 has 4 divisors (see below), whose sum is σ = 43227360. Its totient is φ = 42746700.

The previous prime is 42987011. The next prime is 42987037. The reversal of 42987029 is 92078924.

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 42987029 - 2⁸ = 42986773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42987059) 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, 119897 + ... + 120254.

It is an arithmetic number, because the mean of its divisors is an integer number (10806840).

Almost surely, 2^42987029 is an apocalyptic number.

It is an amenable number.

42987029 is a deficient number, since it is larger than the sum of its proper divisors (240331).

42987029 is a wasteful number, since it uses less digits than its factorization.

42987029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240330.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 42987029 is about 6556.4494202274. The cubic root of 42987029 is about 350.3045756927.

The spelling of 42987029 in words is "forty-two million, nine hundred eighty-seven thousand, twenty-nine".