67220542 has 4 divisors (see below), whose sum is σ = 100830816. Its totient is φ = 33610270.

The previous prime is 67220501. The next prime is 67220563. The reversal of 67220542 is 24502276.

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

It is a self number, because there is not a number n which added to its sum of digits gives 67220542.

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, 16805134 + ... + 16805137.

It is an arithmetic number, because the mean of its divisors is an integer number (25207704).

Almost surely, 2^67220542 is an apocalyptic number.

67220542 is a deficient number, since it is larger than the sum of its proper divisors (33610274).

67220542 is a wasteful number, since it uses less digits than its factorization.

67220542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33610273.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 67220542 is about 8198.8134507379. The cubic root of 67220542 is about 406.5999647237.

The spelling of 67220542 in words is "sixty-seven million, two hundred twenty thousand, five hundred forty-two".