65142930 has 16 divisors (see below), whose sum is σ = 156343104. Its totient is φ = 17371440.

The previous prime is 65142901. The next prime is 65142947. The reversal of 65142930 is 3924156.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2171431 = 65142930 / (6 + 5 + 1 + 4 + 2 + 9 + 3 + 0).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1085686 + ... + 1085745.

It is an arithmetic number, because the mean of its divisors is an integer number (9771444).

Almost surely, 2^65142930 is an apocalyptic number.

65142930 is an abundant number, since it is smaller than the sum of its proper divisors (91200174).

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

65142930 is a wasteful number, since it uses less digits than its factorization.

65142930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171441.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 65142930 is about 8071.1170230644. The cubic root of 65142930 is about 402.3670689969.

The spelling of 65142930 in words is "sixty-five million, one hundred forty-two thousand, nine hundred thirty".