30642125 has 32 divisors (see below), whose sum is σ = 40435200. Its totient is φ = 23150400.

The previous prime is 30642121. The next prime is 30642127. The reversal of 30642125 is 52124603.

It is not a de Polignac number, because 30642125 - 2² = 30642121 is a prime.

It is a super-3 number, since 3×30642125³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30642125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30642121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 286322 + ... + 286428.

It is an arithmetic number, because the mean of its divisors is an integer number (1263600).

Almost surely, 2^30642125 is an apocalyptic number.

It is an amenable number.

30642125 is a deficient number, since it is larger than the sum of its proper divisors (9793075).

30642125 is a wasteful number, since it uses less digits than its factorization.

30642125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 30642125 is about 5535.5329463386. The cubic root of 30642125 is about 312.9245429812.

Adding to 30642125 its reverse (52124603), we get a palindrome (82766728).

The spelling of 30642125 in words is "thirty million, six hundred forty-two thousand, one hundred twenty-five".