125142405 has 8 divisors (see below), whose sum is σ = 200227872. Its totient is φ = 66742608.

The previous prime is 125142403. The next prime is 125142419. The reversal of 125142405 is 504241521.

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

It is not a de Polignac number, because 125142405 - 2¹ = 125142403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125142401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4171399 + ... + 4171428.

It is an arithmetic number, because the mean of its divisors is an integer number (25028484).

Almost surely, 2^125142405 is an apocalyptic number.

125142405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125142405 is a deficient number, since it is larger than the sum of its proper divisors (75085467).

125142405 is an equidigital number, since it uses as much as digits as its factorization.

125142405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8342835.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 125142405 is about 11186.7066199128. The cubic root of 125142405 is about 500.1898012752.

Adding to 125142405 its reverse (504241521), we get a palindrome (629383926).

The spelling of 125142405 in words is "one hundred twenty-five million, one hundred forty-two thousand, four hundred five".