20142154541 has 2 divisors, whose sum is σ = 20142154542. Its totient is φ = 20142154540.

The previous prime is 20142154517. The next prime is 20142154559. The reversal of 20142154541 is 14545124102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17749966441 + 2392188100 = 133229^2 + 48910^2 .

It is a cyclic number.

It is not a de Polignac number, because 20142154541 - 2⁶ = 20142154477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20142154511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10071077270 + 10071077271.

It is an arithmetic number, because the mean of its divisors is an integer number (10071077271).

Almost surely, 2^20142154541 is an apocalyptic number.

It is an amenable number.

20142154541 is a deficient number, since it is larger than the sum of its proper divisors (1).

20142154541 is an equidigital number, since it uses as much as digits as its factorization.

20142154541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 20142154541 its reverse (14545124102), we get a palindrome (34687278643).

The spelling of 20142154541 in words is "twenty billion, one hundred forty-two million, one hundred fifty-four thousand, five hundred forty-one".