65278242 has 12 divisors (see below), whose sum is σ = 141436230. Its totient is φ = 21759408.

The previous prime is 65278237. The next prime is 65278271. The reversal of 65278242 is 24287256.

It can be written as a sum of positive squares in only one way, i.e., 55487601 + 9790641 = 7449^2 + 3129^2 .

It is a super-2 number, since 2×65278242² = 8522497757221128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65278197 and 65278206.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1813267 + ... + 1813302.

Almost surely, 2^65278242 is an apocalyptic number.

65278242 is an abundant number, since it is smaller than the sum of its proper divisors (76157988).

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

65278242 is a wasteful number, since it uses less digits than its factorization.

65278242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3626577 (or 3626574 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 65278242 is about 8079.4951574959. The cubic root of 65278242 is about 402.6454693253.

The spelling of 65278242 in words is "sixty-five million, two hundred seventy-eight thousand, two hundred forty-two".