542720178 has 216 divisors, whose sum is σ = 1620727056. Its totient is φ = 129729600.

The previous prime is 542720147. The next prime is 542720183. The reversal of 542720178 is 871027245.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1639473 + ... + 1639803.

It is an arithmetic number, because the mean of its divisors is an integer number (7503366).

Almost surely, 2^542720178 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542720178, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810363528).

542720178 is an abundant number, since it is smaller than the sum of its proper divisors (1078006878).

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

542720178 is a wasteful number, since it uses less digits than its factorization.

542720178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 542720178 is about 23296.3554660380. The cubic root of 542720178 is about 815.6903471138.

The spelling of 542720178 in words is "five hundred forty-two million, seven hundred twenty thousand, one hundred seventy-eight".