392125121 has 8 divisors (see below), whose sum is σ = 398068200. Its totient is φ = 386197632.

The previous prime is 392125109. The next prime is 392125133. The reversal of 392125121 is 121521293.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (392125109) and next prime (392125133).

It can be written as a sum of positive squares in 4 ways, for example, as 52128400 + 339996721 = 7220^2 + 18439^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 392125121 - 2⁶ = 392125057 is a prime.

It is a super-2 number, since 2×392125121² = 307524221038529282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (392125421) 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 7 ways as a sum of consecutive naturals, for example, 52955 + ... + 59903.

It is an arithmetic number, because the mean of its divisors is an integer number (49758525).

Almost surely, 2^392125121 is an apocalyptic number.

It is an amenable number.

392125121 is a deficient number, since it is larger than the sum of its proper divisors (5943079).

392125121 is an equidigital number, since it uses as much as digits as its factorization.

392125121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7795.

The product of its digits is 1080, while the sum is 26.

The square root of 392125121 is about 19802.1494035370. The cubic root of 392125121 is about 731.9390003863.

The spelling of 392125121 in words is "three hundred ninety-two million, one hundred twenty-five thousand, one hundred twenty-one".