125420429 has 2 divisors, whose sum is σ = 125420430. Its totient is φ = 125420428.

The previous prime is 125420423. The next prime is 125420461. The reversal of 125420429 is 924024521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86955625 + 38464804 = 9325^2 + 6202^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125420429 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125420423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62710214 + 62710215.

It is an arithmetic number, because the mean of its divisors is an integer number (62710215).

Almost surely, 2^125420429 is an apocalyptic number.

It is an amenable number.

125420429 is a deficient number, since it is larger than the sum of its proper divisors (1).

125420429 is an equidigital number, since it uses as much as digits as its factorization.

125420429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 125420429 is about 11199.1262605616. The cubic root of 125420429 is about 500.5599446898.

The spelling of 125420429 in words is "one hundred twenty-five million, four hundred twenty thousand, four hundred twenty-nine".