42941987 has 8 divisors (see below), whose sum is σ = 47614512. Its totient is φ = 38397600.

The previous prime is 42941981. The next prime is 42941999. The reversal of 42941987 is 78914924.

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 42941987 - 2⁴ = 42941971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42941981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31328 + ... + 32669.

It is an arithmetic number, because the mean of its divisors is an integer number (5951814).

Almost surely, 2^42941987 is an apocalyptic number.

42941987 is a deficient number, since it is larger than the sum of its proper divisors (4672525).

42941987 is a wasteful number, since it uses less digits than its factorization.

42941987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64069.

The product of its digits is 145152, while the sum is 44.

The square root of 42941987 is about 6553.0135815516. The cubic root of 42941987 is about 350.1821827045.

The spelling of 42941987 in words is "forty-two million, nine hundred forty-one thousand, nine hundred eighty-seven".