542128557 has 16 divisors (see below), whose sum is σ = 735439040. Its totient is φ = 355145472.

The previous prime is 542128553. The next prime is 542128567. The reversal of 542128557 is 755821245.

It is not a de Polignac number, because 542128557 - 2² = 542128553 is a prime.

It is a super-3 number, since 3×542128557³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542128553) 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, 83919 + ... + 90147.

It is an arithmetic number, because the mean of its divisors is an integer number (45964940).

Almost surely, 2^542128557 is an apocalyptic number.

It is an amenable number.

542128557 is a deficient number, since it is larger than the sum of its proper divisors (193310483).

542128557 is a wasteful number, since it uses less digits than its factorization.

542128557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6732.

The product of its digits is 112000, while the sum is 39.

The square root of 542128557 is about 23283.6542879334. The cubic root of 542128557 is about 815.3938437968.

The spelling of 542128557 in words is "five hundred forty-two million, one hundred twenty-eight thousand, five hundred fifty-seven".