342142191 has 32 divisors (see below), whose sum is σ = 515973120. Its totient is φ = 224042112.

The previous prime is 342142169. The next prime is 342142217. The reversal of 342142191 is 191241243.

It is a happy number.

It is not a de Polignac number, because 342142191 - 2¹¹ = 342140143 is a prime.

It is a super-2 number, since 2×342142191² = 234122557724560962, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342142891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 387036 + ... + 387918.

It is an arithmetic number, because the mean of its divisors is an integer number (16124160).

Almost surely, 2^342142191 is an apocalyptic number.

342142191 is a deficient number, since it is larger than the sum of its proper divisors (173830929).

342142191 is a wasteful number, since it uses less digits than its factorization.

342142191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132 (or 1126 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 342142191 is about 18497.0860137482. The cubic root of 342142191 is about 699.4159693241.

The spelling of 342142191 in words is "three hundred forty-two million, one hundred forty-two thousand, one hundred ninety-one".