542512279 has 4 divisors (see below), whose sum is σ = 574424784. Its totient is φ = 510599776.

The previous prime is 542512219. The next prime is 542512291. The reversal of 542512279 is 972215245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 972215245 = 5 ⋅194443049.

It is a cyclic number.

It is not a de Polignac number, because 542512279 - 2¹⁷ = 542381207 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 (542512219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15956227 + ... + 15956260.

It is an arithmetic number, because the mean of its divisors is an integer number (143606196).

Almost surely, 2^542512279 is an apocalyptic number.

542512279 is a deficient number, since it is larger than the sum of its proper divisors (31912505).

542512279 is a wasteful number, since it uses less digits than its factorization.

542512279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31912504.

The product of its digits is 50400, while the sum is 37.

The square root of 542512279 is about 23291.8929887633. The cubic root of 542512279 is about 815.5861787211.

The spelling of 542512279 in words is "five hundred forty-two million, five hundred twelve thousand, two hundred seventy-nine".