1125420389 has 2 divisors, whose sum is σ = 1125420390. Its totient is φ = 1125420388.

The previous prime is 1125420377. The next prime is 1125420419. The reversal of 1125420389 is 9830245211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1109556100 + 15864289 = 33310^2 + 3983^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125420389 - 2⁸ = 1125420133 is a prime.

It is a super-2 number, since 2×1125420389² = 2533142103953822642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1125420319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562710194 + 562710195.

It is an arithmetic number, because the mean of its divisors is an integer number (562710195).

Almost surely, 2^1125420389 is an apocalyptic number.

It is an amenable number.

1125420389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125420389 is an equidigital number, since it uses as much as digits as its factorization.

1125420389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1125420389 is about 33547.2858663708. The cubic root of 1125420389 is about 1040.1714427053.

The spelling of 1125420389 in words is "one billion, one hundred twenty-five million, four hundred twenty thousand, three hundred eighty-nine".