42191223 has 8 divisors (see below), whose sum is σ = 58700928. Its totient is φ = 26904504.

The previous prime is 42191221. The next prime is 42191239. The reversal of 42191223 is 32219124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42191223 - 2¹ = 42191221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42191193 and 42191202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42191221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305665 + ... + 305802.

It is an arithmetic number, because the mean of its divisors is an integer number (7337616).

Almost surely, 2^42191223 is an apocalyptic number.

42191223 is a deficient number, since it is larger than the sum of its proper divisors (16509705).

42191223 is a wasteful number, since it uses less digits than its factorization.

42191223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611493.

The product of its digits is 864, while the sum is 24.

The square root of 42191223 is about 6495.4771187342. The cubic root of 42191223 is about 348.1294025962.

The spelling of 42191223 in words is "forty-two million, one hundred ninety-one thousand, two hundred twenty-three".