125135240 has 16 divisors (see below), whose sum is σ = 281554380. Its totient is φ = 50054080.

The previous prime is 125135237. The next prime is 125135243. The reversal of 125135240 is 42531521.

It is an interprime number because it is at equal distance from previous prime (125135237) and next prime (125135243).

It can be written as a sum of positive squares in 2 ways, for example, as 114019684 + 11115556 = 10678^2 + 3334^2 .

It is not an unprimeable number, because it can be changed into a prime (125135243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1564151 + ... + 1564230.

Almost surely, 2^125135240 is an apocalyptic number.

125135240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125135240 is an abundant number, since it is smaller than the sum of its proper divisors (156419140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125135240 is a wasteful number, since it uses less digits than its factorization.

125135240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3128392 (or 3128388 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 125135240 is about 11186.3863691542. The cubic root of 125135240 is about 500.1802550085.

Adding to 125135240 its reverse (42531521), we get a palindrome (167666761).

The spelling of 125135240 in words is "one hundred twenty-five million, one hundred thirty-five thousand, two hundred forty".