154102341630421 has 2 divisors, whose sum is σ = 154102341630422. Its totient is φ = 154102341630420.

The previous prime is 154102341630397. The next prime is 154102341630473. The reversal of 154102341630421 is 124036143201451.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150084281290321 + 4018060340100 = 12250889^2 + 2004510^2 .

It is a cyclic number.

It is not a de Polignac number, because 154102341630421 - 2⁹ = 154102341629909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154102341630221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77051170815210 + 77051170815211.

It is an arithmetic number, because the mean of its divisors is an integer number (77051170815211).

Almost surely, 2^{154102341630421} is an apocalyptic number.

It is an amenable number.

154102341630421 is a deficient number, since it is larger than the sum of its proper divisors (1).

154102341630421 is an equidigital number, since it uses as much as digits as its factorization.

154102341630421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 37.

Adding to 154102341630421 its reverse (124036143201451), we get a palindrome (278138484831872).

The spelling of 154102341630421 in words is "one hundred fifty-four trillion, one hundred two billion, three hundred forty-one million, six hundred thirty thousand, four hundred twenty-one".