42896621 has 4 divisors (see below), whose sum is σ = 43297632. Its totient is φ = 42495612.

The previous prime is 42896611. The next prime is 42896629. The reversal of 42896621 is 12669824.

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 a de Polignac number, because none of the positive numbers 2^k-42896621 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 (42896629) 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, 200345 + ... + 200558.

It is an arithmetic number, because the mean of its divisors is an integer number (10824408).

Almost surely, 2^42896621 is an apocalyptic number.

It is an amenable number.

42896621 is a deficient number, since it is larger than the sum of its proper divisors (401011).

42896621 is a wasteful number, since it uses less digits than its factorization.

42896621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401010.

The product of its digits is 41472, while the sum is 38.

The square root of 42896621 is about 6549.5512059988. The cubic root of 42896621 is about 350.0588227665.

The spelling of 42896621 in words is "forty-two million, eight hundred ninety-six thousand, six hundred twenty-one".