542115454 has 4 divisors (see below), whose sum is σ = 813173184. Its totient is φ = 271057726.

The previous prime is 542115419. The next prime is 542115463. The reversal of 542115454 is 454511245.

It is a happy number.

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

It is a super-2 number, since 2×542115454² = 587778330931252232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135528862 + ... + 135528865.

It is an arithmetic number, because the mean of its divisors is an integer number (203293296).

Almost surely, 2^542115454 is an apocalyptic number.

542115454 is a deficient number, since it is larger than the sum of its proper divisors (271057730).

542115454 is a wasteful number, since it uses less digits than its factorization.

542115454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271057729.

The product of its digits is 16000, while the sum is 31.

The square root of 542115454 is about 23283.3729085801. The cubic root of 542115454 is about 815.3872745114.

Adding to 542115454 its reverse (454511245), we get a palindrome (996626699).

The spelling of 542115454 in words is "five hundred forty-two million, one hundred fifteen thousand, four hundred fifty-four".