542128752 has 120 divisors (see below), whose sum is σ = 1666969200. Its totient is φ = 163107840.

The previous prime is 542128751. The next prime is 542128753. The reversal of 542128752 is 257821245.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (542128751) and next prime (542128753).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542128751) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 234868 + ... + 237164.

It is an arithmetic number, because the mean of its divisors is an integer number (13891410).

Almost surely, 2^542128752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542128752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833484600).

542128752 is an abundant number, since it is smaller than the sum of its proper divisors (1124840448).

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

542128752 is a wasteful number, since it uses less digits than its factorization.

542128752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2471 (or 2462 counting only the distinct ones).

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

The square root of 542128752 is about 23283.6584754201. The cubic root of 542128752 is about 815.3939415607.

Adding to 542128752 its reverse (257821245), we get a palindrome (799949997).

The spelling of 542128752 in words is "five hundred forty-two million, one hundred twenty-eight thousand, seven hundred fifty-two".