834142491 has 24 divisors (see below), whose sum is σ = 1482921440. Its totient is φ = 439986816.

The previous prime is 834142481. The next prime is 834142493. The reversal of 834142491 is 194241438.

It is a happy number.

It is not a de Polignac number, because 834142491 - 2⁷ = 834142363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (834142493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 508426 + ... + 510063.

Almost surely, 2^834142491 is an apocalyptic number.

834142491 is a deficient number, since it is larger than the sum of its proper divisors (648778949).

834142491 is a wasteful number, since it uses less digits than its factorization.

834142491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018515 (or 1018512 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 834142491 is about 28881.5250809233. The cubic root of 834142491 is about 941.3405089603.

It can be divided in two parts, 83414 and 2491, that added together give a triangular number (85905 = T₄₁₄).

The spelling of 834142491 in words is "eight hundred thirty-four million, one hundred forty-two thousand, four hundred ninety-one".