190042491 has 8 divisors (see below), whose sum is σ = 264407040. Its totient is φ = 121186472.

The previous prime is 190042469. The next prime is 190042543. The reversal of 190042491 is 194240091.

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

It is a cyclic number.

It is not a de Polignac number, because 190042491 - 2¹⁷ = 189911419 is a prime.

It is a super-2 number, since 2×190042491² = 72232296770970162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (190042091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1377051 + ... + 1377188.

It is an arithmetic number, because the mean of its divisors is an integer number (33050880).

Almost surely, 2^190042491 is an apocalyptic number.

190042491 is a deficient number, since it is larger than the sum of its proper divisors (74364549).

190042491 is a wasteful number, since it uses less digits than its factorization.

190042491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2754265.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 190042491 is about 13785.5899764936. The cubic root of 190042491 is about 574.9325602065.

The spelling of 190042491 in words is "one hundred ninety million, forty-two thousand, four hundred ninety-one".