74136542 has 4 divisors (see below), whose sum is σ = 111204816. Its totient is φ = 37068270.

The previous prime is 74136527. The next prime is 74136553. The reversal of 74136542 is 24563147.

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

It is a junction number, because it is equal to n+sod(n) for n = 74136499 and 74136508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18534134 + ... + 18534137.

It is an arithmetic number, because the mean of its divisors is an integer number (27801204).

Almost surely, 2^74136542 is an apocalyptic number.

74136542 is a deficient number, since it is larger than the sum of its proper divisors (37068274).

74136542 is a wasteful number, since it uses less digits than its factorization.

74136542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37068273.

The product of its digits is 20160, while the sum is 32.

The square root of 74136542 is about 8610.2579520012. The cubic root of 74136542 is about 420.0917071096.

Adding to 74136542 its reverse (24563147), we get a palindrome (98699689).

The spelling of 74136542 in words is "seventy-four million, one hundred thirty-six thousand, five hundred forty-two".