65042039 has 4 divisors (see below), whose sum is σ = 65156520. Its totient is φ = 64927560.

The previous prime is 65041993. The next prime is 65042063. The reversal of 65042039 is 93024056.

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

It is a cyclic number.

It is not a de Polignac number, because 65042039 - 2¹⁶ = 64976503 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 (65042069) 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, 56384 + ... + 57525.

It is an arithmetic number, because the mean of its divisors is an integer number (16289130).

Almost surely, 2^65042039 is an apocalyptic number.

65042039 is a deficient number, since it is larger than the sum of its proper divisors (114481).

65042039 is a wasteful number, since it uses less digits than its factorization.

65042039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114480.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 65042039 is about 8064.8644749927. The cubic root of 65042039 is about 402.1592378402.

The spelling of 65042039 in words is "sixty-five million, forty-two thousand, thirty-nine".