65102420 has 48 divisors (see below), whose sum is σ = 143434368. Its totient is φ = 24773760.

The previous prime is 65102413. The next prime is 65102431. The reversal of 65102420 is 2420156.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 65102392 and 65102401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140990 + ... + 141450.

It is an arithmetic number, because the mean of its divisors is an integer number (2988216).

Almost surely, 2^65102420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65102420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71717184).

65102420 is an abundant number, since it is smaller than the sum of its proper divisors (78331948).

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

65102420 is a wasteful number, since it uses less digits than its factorization.

65102420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800 (or 798 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 65102420 is about 8068.6070668982. The cubic root of 65102420 is about 402.2836459255.

Adding to 65102420 its reverse (2420156), we get a palindrome (67522576).

The spelling of 65102420 in words is "sixty-five million, one hundred two thousand, four hundred twenty".