42058821 has 16 divisors (see below), whose sum is σ = 64347264. Its totient is φ = 23937024.

The previous prime is 42058813. The next prime is 42058823. The reversal of 42058821 is 12885024.

It is not a de Polignac number, because 42058821 - 2³ = 42058813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42058823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1501 + ... + 9293.

It is an arithmetic number, because the mean of its divisors is an integer number (4021704).

Almost surely, 2^42058821 is an apocalyptic number.

It is an amenable number.

42058821 is a deficient number, since it is larger than the sum of its proper divisors (22288443).

42058821 is a wasteful number, since it uses less digits than its factorization.

42058821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8060.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 42058821 is about 6485.2772492778. The cubic root of 42058821 is about 347.7648613039.

The spelling of 42058821 in words is "forty-two million, fifty-eight thousand, eight hundred twenty-one".