68215742 has 12 divisors (see below), whose sum is σ = 119029680. Its totient is φ = 29235276.

The previous prime is 68215729. The next prime is 68215783. The reversal of 68215742 is 24751286.

It is a super-2 number, since 2×68215742² = 9306774913221128, 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 (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 347942 + ... + 348137.

It is an arithmetic number, because the mean of its divisors is an integer number (9919140).

Almost surely, 2^68215742 is an apocalyptic number.

68215742 is a deficient number, since it is larger than the sum of its proper divisors (50813938).

68215742 is a wasteful number, since it uses less digits than its factorization.

68215742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696095 (or 696088 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 68215742 is about 8259.2821721987. The cubic root of 68215742 is about 408.5967135266.

The spelling of 68215742 in words is "sixty-eight million, two hundred fifteen thousand, seven hundred forty-two".