542134021 has 16 divisors (see below), whose sum is σ = 652454208. Its totient is φ = 443836800.

The previous prime is 542134013. The next prime is 542134037. The reversal of 542134021 is 120431245.

542134021 = T₁₂₉ + T₁₃₀ + ... + T₁₄₈₁.

It is not a de Polignac number, because 542134021 - 2³ = 542134013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 542133983 and 542134001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542134321) 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, 40371 + ... + 52096.

It is an arithmetic number, because the mean of its divisors is an integer number (40778388).

Almost surely, 2^542134021 is an apocalyptic number.

It is an amenable number.

542134021 is a deficient number, since it is larger than the sum of its proper divisors (110320187).

542134021 is a wasteful number, since it uses less digits than its factorization.

542134021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92532.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 542134021 is about 23283.7716231714. The cubic root of 542134021 is about 815.3965831821.

Adding to 542134021 its reverse (120431245), we get a palindrome (662565266).

The spelling of 542134021 in words is "five hundred forty-two million, one hundred thirty-four thousand, twenty-one".