42253919 has 4 divisors (see below), whose sum is σ = 42576600. Its totient is φ = 41931240.

The previous prime is 42253909. The next prime is 42253927. The reversal of 42253919 is 91935224.

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 42253919 - 2¹⁶ = 42188383 is a prime.

It is a super-2 number, since 2×42253919² = 3570787341717122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42253909) 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, 161144 + ... + 161405.

It is an arithmetic number, because the mean of its divisors is an integer number (10644150).

Almost surely, 2^42253919 is an apocalyptic number.

42253919 is a deficient number, since it is larger than the sum of its proper divisors (322681).

42253919 is a wasteful number, since it uses less digits than its factorization.

42253919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322680.

The product of its digits is 19440, while the sum is 35.

The square root of 42253919 is about 6500.3014545481. The cubic root of 42253919 is about 348.3017569163.

The spelling of 42253919 in words is "forty-two million, two hundred fifty-three thousand, nine hundred nineteen".