542677138 has 4 divisors (see below), whose sum is σ = 814015710. Its totient is φ = 271338568.

The previous prime is 542677081. The next prime is 542677159. The reversal of 542677138 is 831776245.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 474499089 + 68178049 = 21783^2 + 8257^2 .

It is a super-2 number, since 2×542677138² = 588996952215742088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 542677094 and 542677103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135669283 + ... + 135669286.

Almost surely, 2^542677138 is an apocalyptic number.

542677138 is a deficient number, since it is larger than the sum of its proper divisors (271338572).

542677138 is a wasteful number, since it uses less digits than its factorization.

542677138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271338571.

The product of its digits is 282240, while the sum is 43.

The square root of 542677138 is about 23295.4316980819. The cubic root of 542677138 is about 815.6687839817.

The spelling of 542677138 in words is "five hundred forty-two million, six hundred seventy-seven thousand, one hundred thirty-eight".