1421445125129 has 2 divisors, whose sum is σ = 1421445125130. Its totient is φ = 1421445125128.

The previous prime is 1421445125119. The next prime is 1421445125183. The reversal of 1421445125129 is 9215215441241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 931277110729 + 490168014400 = 965027^2 + 700120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421445125129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1421445125119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710722562564 + 710722562565.

It is an arithmetic number, because the mean of its divisors is an integer number (710722562565).

Almost surely, 2^{1421445125129} is an apocalyptic number.

It is an amenable number.

1421445125129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421445125129 is an equidigital number, since it uses as much as digits as its factorization.

1421445125129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 41.

The spelling of 1421445125129 in words is "one trillion, four hundred twenty-one billion, four hundred forty-five million, one hundred twenty-five thousand, one hundred twenty-nine".