42141021 has 8 divisors (see below), whose sum is σ = 60510240. Its totient is φ = 25932912.

The previous prime is 42141017. The next prime is 42141041. The reversal of 42141021 is 12014124.

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

It is not a de Polignac number, because 42141021 - 2² = 42141017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42141041) 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 7 ways as a sum of consecutive naturals, for example, 540231 + ... + 540308.

It is an arithmetic number, because the mean of its divisors is an integer number (7563780).

Almost surely, 2^42141021 is an apocalyptic number.

It is an amenable number.

42141021 is a deficient number, since it is larger than the sum of its proper divisors (18369219).

42141021 is a wasteful number, since it uses less digits than its factorization.

42141021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080555.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 42141021 is about 6491.6115872717. The cubic root of 42141021 is about 347.9912717457.

Adding to 42141021 its reverse (12014124), we get a palindrome (54155145).

The spelling of 42141021 in words is "forty-two million, one hundred forty-one thousand, twenty-one".