142009125 has 16 divisors (see below), whose sum is σ = 236303808. Its totient is φ = 75738000.

The previous prime is 142009121. The next prime is 142009129. The reversal of 142009125 is 521900241.

142009125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (142009121) and next prime (142009129).

It is not a de Polignac number, because 142009125 - 2² = 142009121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142009095 and 142009104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142009121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188971 + ... + 189720.

It is an arithmetic number, because the mean of its divisors is an integer number (14768988).

Almost surely, 2^142009125 is an apocalyptic number.

142009125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142009125 is a deficient number, since it is larger than the sum of its proper divisors (94294683).

142009125 is an equidigital number, since it uses as much as digits as its factorization.

142009125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378709 (or 378699 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 142009125 is about 11916.7581581569. The cubic root of 142009125 is about 521.7215195218.

Adding to 142009125 its reverse (521900241), we get a palindrome (663909366).

The spelling of 142009125 in words is "one hundred forty-two million, nine thousand, one hundred twenty-five".