254103545421 has 24 divisors (see below), whose sum is σ = 413783556480. Its totient is φ = 154002146760.

The previous prime is 254103545407. The next prime is 254103545431. The reversal of 254103545421 is 124545301452.

254103545421 is a `hidden beast` number, since 2 + 5 + 4 + 103 + 5 + 4 + 542 + 1 = 666.

It is not a de Polignac number, because 254103545421 - 2¹⁰ = 254103544397 is a prime.

It is a super-2 number, since 2×254103545421² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254103545431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38886165 + ... + 38892698.

It is an arithmetic number, because the mean of its divisors is an integer number (17240981520).

Almost surely, 2^254103545421 is an apocalyptic number.

It is an amenable number.

254103545421 is a deficient number, since it is larger than the sum of its proper divisors (159680011059).

254103545421 is a wasteful number, since it uses less digits than its factorization.

254103545421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77778894 (or 77778877 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 254103545421 its reverse (124545301452), we get a palindrome (378648846873).

The spelling of 254103545421 in words is "two hundred fifty-four billion, one hundred three million, five hundred forty-five thousand, four hundred twenty-one".