134540642 has 4 divisors (see below), whose sum is σ = 201810966. Its totient is φ = 67270320.

The previous prime is 134540629. The next prime is 134540663. The reversal of 134540642 is 246045431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246045431 = 2273 ⋅108247.

It can be written as a sum of positive squares in only one way, i.e., 82973881 + 51566761 = 9109^2 + 7181^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33635159 + ... + 33635162.

Almost surely, 2^134540642 is an apocalyptic number.

134540642 is a deficient number, since it is larger than the sum of its proper divisors (67270324).

134540642 is an equidigital number, since it uses as much as digits as its factorization.

134540642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67270323.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 134540642 is about 11599.1655734367. The cubic root of 134540642 is about 512.4102775315.

The spelling of 134540642 in words is "one hundred thirty-four million, five hundred forty thousand, six hundred forty-two".