340142425 has 24 divisors (see below), whose sum is σ = 487468800. Its totient is φ = 230609280.

The previous prime is 340142381. The next prime is 340142459. The reversal of 340142425 is 524241043.

It is a happy number.

It is not a de Polignac number, because 340142425 - 2¹⁵ = 340109657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 340142425.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4656 + ... + 26494.

It is an arithmetic number, because the mean of its divisors is an integer number (20311200).

Almost surely, 2^340142425 is an apocalyptic number.

340142425 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

340142425 is a deficient number, since it is larger than the sum of its proper divisors (147326375).

340142425 is a wasteful number, since it uses less digits than its factorization.

340142425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21945 (or 21940 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 340142425 is about 18442.9505502780. The cubic root of 340142425 is about 698.0506479341.

Adding to 340142425 its reverse (524241043), we get a palindrome (864383468).

The spelling of 340142425 in words is "three hundred forty million, one hundred forty-two thousand, four hundred twenty-five".