65420402 has 4 divisors (see below), whose sum is σ = 98130606. Its totient is φ = 32710200.

The previous prime is 65420393. The next prime is 65420423. The reversal of 65420402 is 20402456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 43414921 + 22005481 = 6589^2 + 4691^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16355099 + ... + 16355102.

Almost surely, 2^65420402 is an apocalyptic number.

65420402 is a deficient number, since it is larger than the sum of its proper divisors (32710204).

65420402 is a wasteful number, since it uses less digits than its factorization.

65420402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32710203.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 65420402 is about 8088.2879523420. The cubic root of 65420402 is about 402.9375450958.

Adding to 65420402 its reverse (20402456), we get a palindrome (85822858).

The spelling of 65420402 in words is "sixty-five million, four hundred twenty thousand, four hundred two".