1042120129 has 2 divisors, whose sum is σ = 1042120130. Its totient is φ = 1042120128.

The previous prime is 1042120073. The next prime is 1042120169. The reversal of 1042120129 is 9210212401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1008189504 + 33930625 = 31752^2 + 5825^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042120129 - 2²³ = 1033731521 is a prime.

It is not a weakly prime, because it can be changed into another prime (1042120169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521060064 + 521060065.

It is an arithmetic number, because the mean of its divisors is an integer number (521060065).

Almost surely, 2^1042120129 is an apocalyptic number.

It is an amenable number.

1042120129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042120129 is an equidigital number, since it uses as much as digits as its factorization.

1042120129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1042120129 is about 32281.8854622836. The cubic root of 1042120129 is about 1013.8474072297.

The spelling of 1042120129 in words is "one billion, forty-two million, one hundred twenty thousand, one hundred twenty-nine".