254121212541 has 16 divisors (see below), whose sum is σ = 387259019264. Its totient is φ = 145202110704.

The previous prime is 254121212519. The next prime is 254121212603. The reversal of 254121212541 is 145212121452.

It is a de Polignac number, because none of the positive numbers 2^k-254121212541 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 254121212499 and 254121212508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254121202541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99625 + ... + 719838.

It is an arithmetic number, because the mean of its divisors is an integer number (24203688704).

Almost surely, 2^254121212541 is an apocalyptic number.

254121212541 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

254121212541 is a deficient number, since it is larger than the sum of its proper divisors (133137806723).

254121212541 is a wasteful number, since it uses less digits than its factorization.

254121212541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834240.

The product of its digits is 6400, while the sum is 30.

Adding to 254121212541 its reverse (145212121452), we get a palindrome (399333333993).

The spelling of 254121212541 in words is "two hundred fifty-four billion, one hundred twenty-one million, two hundred twelve thousand, five hundred forty-one".