42191203 has 4 divisors (see below), whose sum is σ = 42213808. Its totient is φ = 42168600.

The previous prime is 42191197. The next prime is 42191221. The reversal of 42191203 is 30219124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42191203 is a prime.

It is a super-2 number, since 2×42191203² = 3560195221174418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42191273) 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, 8223 + ... + 12328.

It is an arithmetic number, because the mean of its divisors is an integer number (10553452).

Almost surely, 2^42191203 is an apocalyptic number.

42191203 is a deficient number, since it is larger than the sum of its proper divisors (22605).

42191203 is a wasteful number, since it uses less digits than its factorization.

42191203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22604.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 42191203 is about 6495.4755792013. The cubic root of 42191203 is about 348.1293475880.

The spelling of 42191203 in words is "forty-two million, one hundred ninety-one thousand, two hundred three".