68420542 has 4 divisors (see below), whose sum is σ = 102630816. Its totient is φ = 34210270.

The previous prime is 68420533. The next prime is 68420551. The reversal of 68420542 is 24502486.

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

It is an interprime number because it is at equal distance from previous prime (68420533) and next prime (68420551).

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, 17105134 + ... + 17105137.

It is an arithmetic number, because the mean of its divisors is an integer number (25657704).

Almost surely, 2^68420542 is an apocalyptic number.

68420542 is a deficient number, since it is larger than the sum of its proper divisors (34210274).

68420542 is a wasteful number, since it uses less digits than its factorization.

68420542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34210273.

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 68420542 is about 8271.6710524537. The cubic root of 68420542 is about 409.0052067414.

The spelling of 68420542 in words is "sixty-eight million, four hundred twenty thousand, five hundred forty-two".