42444653 has 4 divisors (see below), whose sum is σ = 42841440. Its totient is φ = 42047868.

The previous prime is 42444643. The next prime is 42444691. The reversal of 42444653 is 35644424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42444653 - 2¹² = 42440557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42444643) 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, 198233 + ... + 198446.

It is an arithmetic number, because the mean of its divisors is an integer number (10710360).

Almost surely, 2^42444653 is an apocalyptic number.

It is an amenable number.

42444653 is a deficient number, since it is larger than the sum of its proper divisors (396787).

42444653 is a wasteful number, since it uses less digits than its factorization.

42444653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396786.

The product of its digits is 46080, while the sum is 32.

The square root of 42444653 is about 6514.9561011568. The cubic root of 42444653 is about 348.8250478472.

The spelling of 42444653 in words is "forty-two million, four hundred forty-four thousand, six hundred fifty-three".