42021151 has 8 divisors (see below), whose sum is σ = 43809408. Its totient is φ = 40260000.

The previous prime is 42021143. The next prime is 42021173. The reversal of 42021151 is 15112024.

42021151 = T₁₆₃₁ + T₁₆₃₂ + ... + T₁₆₆₁.

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 42021151 - 2³ = 42021143 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 (42021121) 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, 3580 + ... + 9841.

It is an arithmetic number, because the mean of its divisors is an integer number (5476176).

Almost surely, 2^42021151 is an apocalyptic number.

42021151 is a deficient number, since it is larger than the sum of its proper divisors (1788257).

42021151 is a wasteful number, since it uses less digits than its factorization.

42021151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13553.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 42021151 is about 6482.3723280910. The cubic root of 42021151 is about 347.6610050453.

Adding to 42021151 its reverse (15112024), we get a palindrome (57133175).

The spelling of 42021151 in words is "forty-two million, twenty-one thousand, one hundred fifty-one".