134142591 has 16 divisors (see below), whose sum is σ = 196547328. Its totient is φ = 80702400.

The previous prime is 134142571. The next prime is 134142667. The reversal of 134142591 is 195241431.

It is not a de Polignac number, because 134142591 - 2¹⁷ = 134011519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134142571) 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, 10315 + ... + 19356.

It is an arithmetic number, because the mean of its divisors is an integer number (12284208).

Almost surely, 2^134142591 is an apocalyptic number.

134142591 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

134142591 is a deficient number, since it is larger than the sum of its proper divisors (62404737).

134142591 is a wasteful number, since it uses less digits than its factorization.

134142591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29822.

The product of its digits is 4320, while the sum is 30.

The square root of 134142591 is about 11581.9942583305. The cubic root of 134142591 is about 511.9044405298.

The spelling of 134142591 in words is "one hundred thirty-four million, one hundred forty-two thousand, five hundred ninety-one".