42522987 has 8 divisors (see below), whose sum is σ = 61058704. Its totient is φ = 26167968.

The previous prime is 42522983. The next prime is 42523009. The reversal of 42522987 is 78922524.

42522987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42522987 - 2² = 42522983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1090333 = 42522987 / (4 + 2 + 5 + 2 + 2 + 9 + 8 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42522983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545128 + ... + 545205.

It is an arithmetic number, because the mean of its divisors is an integer number (7632338).

Almost surely, 2^42522987 is an apocalyptic number.

42522987 is a deficient number, since it is larger than the sum of its proper divisors (18535717).

42522987 is a wasteful number, since it uses less digits than its factorization.

42522987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090349.

The product of its digits is 80640, while the sum is 39.

The square root of 42522987 is about 6520.9651892952. The cubic root of 42522987 is about 349.0395080656.

The spelling of 42522987 in words is "forty-two million, five hundred twenty-two thousand, nine hundred eighty-seven".