42147412737121 has 2 divisors, whose sum is σ = 42147412737122. Its totient is φ = 42147412737120.

The previous prime is 42147412737037. The next prime is 42147412737181. The reversal of 42147412737121 is 12173721474124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28664298749025 + 13483113988096 = 5353905^2 + 3671936^2 .

It is a cyclic number.

It is not a de Polignac number, because 42147412737121 - 2⁴³ = 33351319714913 is a prime.

It is not a weakly prime, because it can be changed into another prime (42147412737181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21073706368560 + 21073706368561.

It is an arithmetic number, because the mean of its divisors is an integer number (21073706368561).

Almost surely, 2^{42147412737121} is an apocalyptic number.

It is an amenable number.

42147412737121 is a deficient number, since it is larger than the sum of its proper divisors (1).

42147412737121 is an equidigital number, since it uses as much as digits as its factorization.

42147412737121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 526848, while the sum is 46.

The spelling of 42147412737121 in words is "forty-two trillion, one hundred forty-seven billion, four hundred twelve million, seven hundred thirty-seven thousand, one hundred twenty-one".