67542434 has 4 divisors (see below), whose sum is σ = 101313654. Its totient is φ = 33771216.

The previous prime is 67542407. The next prime is 67542439. The reversal of 67542434 is 43424576.

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., 62457409 + 5085025 = 7903^2 + 2255^2 .

It is a super-3 number, since 3×67542434³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 67542394 and 67542403.

It is not an unprimeable number, because it can be changed into a prime (67542439) by changing a digit.

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, 16885607 + ... + 16885610.

Almost surely, 2^67542434 is an apocalyptic number.

67542434 is a deficient number, since it is larger than the sum of its proper divisors (33771220).

67542434 is a wasteful number, since it uses less digits than its factorization.

67542434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33771219.

The product of its digits is 80640, while the sum is 35.

The square root of 67542434 is about 8218.4204078399. The cubic root of 67542434 is about 407.2479457994.

It can be divided in two parts, 67542 and 434, that added together give a palindrome (67976).

The spelling of 67542434 in words is "sixty-seven million, five hundred forty-two thousand, four hundred thirty-four".