65021430 has 32 divisors (see below), whose sum is σ = 165232224. Its totient is φ = 16318976.

The previous prime is 65021419. The next prime is 65021441. The reversal of 65021430 is 3412056.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (65021419) and next prime (65021441).

It is a junction number, because it is equal to n+sod(n) for n = 65021397 and 65021406.

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, 63237 + ... + 64256.

It is an arithmetic number, because the mean of its divisors is an integer number (5163507).

Almost surely, 2^65021430 is an apocalyptic number.

65021430 is an abundant number, since it is smaller than the sum of its proper divisors (100210794).

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

65021430 is a wasteful number, since it uses less digits than its factorization.

65021430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127520.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 65021430 is about 8063.5866709548. The cubic root of 65021430 is about 402.1167577489.

Adding to 65021430 its reverse (3412056), we get a palindrome (68433486).

The spelling of 65021430 in words is "sixty-five million, twenty-one thousand, four hundred thirty".