542512278 has 192 divisors, whose sum is σ = 1536537600. Its totient is φ = 134265600.

The previous prime is 542512219. The next prime is 542512291. The reversal of 542512278 is 872215245.

It is a happy number.

542512278 is a `hidden beast` number, since 5 + 425 + 1 + 227 + 8 = 666.

Its product of digits (44800) is a multiple of the sum of its prime divisors (280).

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 3640948 + ... + 3641096.

It is an arithmetic number, because the mean of its divisors is an integer number (8002800).

Almost surely, 2^542512278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542512278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (768268800).

542512278 is an abundant number, since it is smaller than the sum of its proper divisors (994025322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

542512278 is a wasteful number, since it uses less digits than its factorization.

542512278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283 (or 280 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 542512278 is about 23291.8929672966. The cubic root of 542512278 is about 815.5861782200.

The spelling of 542512278 in words is "five hundred forty-two million, five hundred twelve thousand, two hundred seventy-eight".