542555139 has 32 divisors (see below), whose sum is σ = 835591680. Its totient is φ = 306738432.

The previous prime is 542555137. The next prime is 542555183. The reversal of 542555139 is 931555245.

It is not a de Polignac number, because 542555139 - 2¹ = 542555137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 542555097 and 542555106.

It is not an unprimeable number, because it can be changed into a prime (542555131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1294672 + ... + 1295090.

It is an arithmetic number, because the mean of its divisors is an integer number (26112240).

Almost surely, 2^542555139 is an apocalyptic number.

542555139 is a deficient number, since it is larger than the sum of its proper divisors (293036541).

542555139 is a wasteful number, since it uses less digits than its factorization.

542555139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939.

The product of its digits is 135000, while the sum is 39.

The square root of 542555139 is about 23292.8130332083. The cubic root of 542555139 is about 815.6076560250.

The spelling of 542555139 in words is "five hundred forty-two million, five hundred fifty-five thousand, one hundred thirty-nine".