134742381 has 8 divisors (see below), whose sum is σ = 185851680. Its totient is φ = 86730672.

The previous prime is 134742379. The next prime is 134742389. The reversal of 134742381 is 183247431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 134742381 - 2¹ = 134742379 is a prime.

It is a super-2 number, since 2×134742381² = 36311018475098322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134742389) 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, 774295 + ... + 774468.

It is an arithmetic number, because the mean of its divisors is an integer number (23231460).

Almost surely, 2^134742381 is an apocalyptic number.

It is an amenable number.

134742381 is a deficient number, since it is larger than the sum of its proper divisors (51109299).

134742381 is a wasteful number, since it uses less digits than its factorization.

134742381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548795.

The product of its digits is 16128, while the sum is 33.

The square root of 134742381 is about 11607.8585880428. The cubic root of 134742381 is about 512.6662634064. Note that the first 3 decimals are identical.

The spelling of 134742381 in words is "one hundred thirty-four million, seven hundred forty-two thousand, three hundred eighty-one".