125414021 has 2 divisors, whose sum is σ = 125414022. Its totient is φ = 125414020.

The previous prime is 125413991. The next prime is 125414057. The reversal of 125414021 is 120414521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118048225 + 7365796 = 10865^2 + 2714^2 .

It is an emirp because it is prime and its reverse (120414521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125414021 - 2¹⁴ = 125397637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125413984 and 125414002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125414221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62707010 + 62707011.

It is an arithmetic number, because the mean of its divisors is an integer number (62707011).

Almost surely, 2^125414021 is an apocalyptic number.

It is an amenable number.

125414021 is a deficient number, since it is larger than the sum of its proper divisors (1).

125414021 is an equidigital number, since it uses as much as digits as its factorization.

125414021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 125414021 is about 11198.8401631598. The cubic root of 125414021 is about 500.5514196492.

Adding to 125414021 its reverse (120414521), we get a palindrome (245828542).

The spelling of 125414021 in words is "one hundred twenty-five million, four hundred fourteen thousand, twenty-one".