42215453 has 4 divisors (see below), whose sum is σ = 48246240. Its totient is φ = 36184668.

The previous prime is 42215449. The next prime is 42215479. The reversal of 42215453 is 35451224.

It is a happy number.

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 42215453 - 2² = 42215449 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42215413) 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, 3015383 + ... + 3015396.

It is an arithmetic number, because the mean of its divisors is an integer number (12061560).

Almost surely, 2^42215453 is an apocalyptic number.

It is an amenable number.

42215453 is a deficient number, since it is larger than the sum of its proper divisors (6030787).

42215453 is an equidigital number, since it uses as much as digits as its factorization.

42215453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6030786.

The product of its digits is 4800, while the sum is 26.

The square root of 42215453 is about 6497.3419950007. The cubic root of 42215453 is about 348.1960322614.

Adding to 42215453 its reverse (35451224), we get a palindrome (77666677).

The spelling of 42215453 in words is "forty-two million, two hundred fifteen thousand, four hundred fifty-three".