192420981 has 8 divisors (see below), whose sum is σ = 285068160. Its totient is φ = 128280636.

The previous prime is 192420973. The next prime is 192421027. The reversal of 192420981 is 189024291.

It is not a de Polignac number, because 192420981 - 2³ = 192420973 is a prime.

It is a super-2 number, since 2×192420981² = 74051667858004722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (192420931) 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, 3563325 + ... + 3563378.

It is an arithmetic number, because the mean of its divisors is an integer number (35633520).

Almost surely, 2^192420981 is an apocalyptic number.

It is an amenable number.

192420981 is a deficient number, since it is larger than the sum of its proper divisors (92647179).

192420981 is an equidigital number, since it uses as much as digits as its factorization.

192420981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7126712 (or 7126706 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 192420981 is about 13871.5889861256. The cubic root of 192420981 is about 577.3211589920.

The spelling of 192420981 in words is "one hundred ninety-two million, four hundred twenty thousand, nine hundred eighty-one".