68254121 has 4 divisors (see below), whose sum is σ = 73504452. Its totient is φ = 63003792.

The previous prime is 68254117. The next prime is 68254127. The reversal of 68254121 is 12145286.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12145286 = 2 ⋅6072643.

It can be written as a sum of positive squares in 2 ways, for example, as 9517225 + 58736896 = 3085^2 + 7664^2 .

It is a cyclic number.

It is not a de Polignac number, because 68254121 - 2² = 68254117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68254127) 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, 2625146 + ... + 2625171.

It is an arithmetic number, because the mean of its divisors is an integer number (18376113).

Almost surely, 2^68254121 is an apocalyptic number.

It is an amenable number.

68254121 is a deficient number, since it is larger than the sum of its proper divisors (5250331).

68254121 is a wasteful number, since it uses less digits than its factorization.

68254121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5250330.

The product of its digits is 3840, while the sum is 29.

The square root of 68254121 is about 8261.6052314305. The cubic root of 68254121 is about 408.6733263086.

The spelling of 68254121 in words is "sixty-eight million, two hundred fifty-four thousand, one hundred twenty-one".