68121494 has 8 divisors (see below), whose sum is σ = 116779728. Its totient is φ = 29194920.

The previous prime is 68121467. The next prime is 68121497. The reversal of 68121494 is 49412186.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68121497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2432897 + ... + 2432924.

It is an arithmetic number, because the mean of its divisors is an integer number (14597466).

Almost surely, 2^68121494 is an apocalyptic number.

68121494 is a deficient number, since it is larger than the sum of its proper divisors (48658234).

68121494 is a wasteful number, since it uses less digits than its factorization.

68121494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4865830.

The product of its digits is 13824, while the sum is 35.

The square root of 68121494 is about 8253.5746195209. The cubic root of 68121494 is about 408.4084521340.

The spelling of 68121494 in words is "sixty-eight million, one hundred twenty-one thousand, four hundred ninety-four".