125429401 has 4 divisors (see below), whose sum is σ = 125545252. Its totient is φ = 125313552.

The previous prime is 125429399. The next prime is 125429407. The reversal of 125429401 is 104924521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 106069401 + 19360000 = 10299^2 + 4400^2 .

It is a cyclic number.

It is not a de Polignac number, because 125429401 - 2¹ = 125429399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125429401.

It is not an unprimeable number, because it can be changed into a prime (125429407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56286 + ... + 58471.

It is an arithmetic number, because the mean of its divisors is an integer number (31386313).

Almost surely, 2^125429401 is an apocalyptic number.

It is an amenable number.

125429401 is a deficient number, since it is larger than the sum of its proper divisors (115851).

125429401 is a wasteful number, since it uses less digits than its factorization.

125429401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115850.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 125429401 is about 11199.5268203617. The cubic root of 125429401 is about 500.5718803231.

The spelling of 125429401 in words is "one hundred twenty-five million, four hundred twenty-nine thousand, four hundred one".