345125140 has 12 divisors (see below), whose sum is σ = 724762836. Its totient is φ = 138050048.

The previous prime is 345125119. The next prime is 345125141. The reversal of 345125140 is 41521543.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 255936004 + 89189136 = 15998^2 + 9444^2 .

It is a super-2 number, since 2×345125140² = 238222724520039200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345125141) 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, 8628109 + ... + 8628148.

It is an arithmetic number, because the mean of its divisors is an integer number (60396903).

Almost surely, 2^345125140 is an apocalyptic number.

It is an amenable number.

345125140 is an abundant number, since it is smaller than the sum of its proper divisors (379637696).

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

345125140 is a wasteful number, since it uses less digits than its factorization.

345125140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17256266 (or 17256264 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 345125140 is about 18577.5439711497. The cubic root of 345125140 is about 701.4426980301.

Adding to 345125140 its reverse (41521543), we get a palindrome (386646683).

The spelling of 345125140 in words is "three hundred forty-five million, one hundred twenty-five thousand, one hundred forty".