191242023 has 8 divisors (see below), whose sum is σ = 291416448. Its totient is φ = 109281144.

The previous prime is 191242021. The next prime is 191242031. The reversal of 191242023 is 320242191.

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

It is not a de Polignac number, because 191242023 - 2¹ = 191242021 is a prime.

It is a super-2 number, since 2×191242023² = 73147022722265058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 191241984 and 191242002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191242021) 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, 4553361 + ... + 4553402.

It is an arithmetic number, because the mean of its divisors is an integer number (36427056).

Almost surely, 2^191242023 is an apocalyptic number.

191242023 is a deficient number, since it is larger than the sum of its proper divisors (100174425).

191242023 is an equidigital number, since it uses as much as digits as its factorization.

191242023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9106773.

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

The square root of 191242023 is about 13829.0282738882. The cubic root of 191242023 is about 576.1396658086.

The spelling of 191242023 in words is "one hundred ninety-one million, two hundred forty-two thousand, twenty-three".