190141721 has 16 divisors (see below), whose sum is σ = 249538560. Its totient is φ = 140363280.

The previous prime is 190141717. The next prime is 190141729. The reversal of 190141721 is 127141091.

190141721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 190141721 - 2² = 190141717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190141729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63521 + ... + 66446.

It is an arithmetic number, because the mean of its divisors is an integer number (15596160).

Almost surely, 2^190141721 is an apocalyptic number.

190141721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

190141721 is a deficient number, since it is larger than the sum of its proper divisors (59396839).

190141721 is a wasteful number, since it uses less digits than its factorization.

190141721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130004.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 190141721 is about 13789.1885548063. The cubic root of 190141721 is about 575.0326091147.

The spelling of 190141721 in words is "one hundred ninety million, one hundred forty-one thousand, seven hundred twenty-one".