65042237 has 4 divisors (see below), whose sum is σ = 70045500. Its totient is φ = 60038976.

The previous prime is 65042233. The next prime is 65042239. The reversal of 65042237 is 73224056.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17859076 + 47183161 = 4226^2 + 6869^2 .

It is a cyclic number.

It is not a de Polignac number, because 65042237 - 2² = 65042233 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65042231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2501612 + ... + 2501637.

It is an arithmetic number, because the mean of its divisors is an integer number (17511375).

Almost surely, 2^65042237 is an apocalyptic number.

It is an amenable number.

65042237 is a deficient number, since it is larger than the sum of its proper divisors (5003263).

65042237 is a wasteful number, since it uses less digits than its factorization.

65042237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5003262.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 65042237 is about 8064.8767504532. The cubic root of 65042237 is about 402.1596459222.

The spelling of 65042237 in words is "sixty-five million, forty-two thousand, two hundred thirty-seven".