542362021 has 8 divisors (see below), whose sum is σ = 562539384. Its totient is φ = 522475200.

The previous prime is 542362003. The next prime is 542362027. The reversal of 542362021 is 120263245.

It can be written as a sum of positive squares in 4 ways, for example, as 250430625 + 291931396 = 15825^2 + 17086^2 .

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 542362021 - 2⁷ = 542361893 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 (542362027) 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, 68830 + ... + 76303.

It is an arithmetic number, because the mean of its divisors is an integer number (70317423).

Almost surely, 2^542362021 is an apocalyptic number.

It is an amenable number.

542362021 is a deficient number, since it is larger than the sum of its proper divisors (20177363).

542362021 is a wasteful number, since it uses less digits than its factorization.

542362021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145271.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 542362021 is about 23288.6672224926. The cubic root of 542362021 is about 815.5108749486.

The spelling of 542362021 in words is "five hundred forty-two million, three hundred sixty-two thousand, twenty-one".