68421039 has 24 divisors (see below), whose sum is σ = 98804880. Its totient is φ = 42092544.

The previous prime is 68421037. The next prime is 68421047. The reversal of 68421039 is 93012486.

It is not a de Polignac number, because 68421039 - 2¹ = 68421037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68421037) 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 in 23 ways as a sum of consecutive naturals, for example, 45207 + ... + 46695.

It is an arithmetic number, because the mean of its divisors is an integer number (4116870).

Almost surely, 2^68421039 is an apocalyptic number.

68421039 is a deficient number, since it is larger than the sum of its proper divisors (30383841).

68421039 is a wasteful number, since it uses less digits than its factorization.

68421039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579 (or 1562 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 68421039 is about 8271.7010946963. The cubic root of 68421039 is about 409.0061970634.

The spelling of 68421039 in words is "sixty-eight million, four hundred twenty-one thousand, thirty-nine".