125240029 has 2 divisors, whose sum is σ = 125240030. Its totient is φ = 125240028.

The previous prime is 125239997. The next prime is 125240033. The reversal of 125240029 is 920042521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73788100 + 51451929 = 8590^2 + 7173^2 .

It is a cyclic number.

It is not a de Polignac number, because 125240029 - 2⁵ = 125239997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125239985 and 125240012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125240429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62620014 + 62620015.

It is an arithmetic number, because the mean of its divisors is an integer number (62620015).

Almost surely, 2^125240029 is an apocalyptic number.

It is an amenable number.

125240029 is a deficient number, since it is larger than the sum of its proper divisors (1).

125240029 is an equidigital number, since it uses as much as digits as its factorization.

125240029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 125240029 is about 11191.0691625063. The cubic root of 125240029 is about 500.3198340354.

The spelling of 125240029 in words is "one hundred twenty-five million, two hundred forty thousand, twenty-nine".