134440542 has 48 divisors (see below), whose sum is σ = 312446160. Its totient is φ = 41648256.

The previous prime is 134440531. The next prime is 134440547. The reversal of 134440542 is 245044431.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134440547) 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, 14418 + ... + 21834.

It is an arithmetic number, because the mean of its divisors is an integer number (6509295).

Almost surely, 2^134440542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 134440542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156223080).

134440542 is an abundant number, since it is smaller than the sum of its proper divisors (178005618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

134440542 is a wasteful number, since it uses less digits than its factorization.

134440542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7497 (or 7494 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 134440542 is about 11594.8498049781. The cubic root of 134440542 is about 512.2831660159.

Adding to 134440542 its reverse (245044431), we get a palindrome (379484973).

The spelling of 134440542 in words is "one hundred thirty-four million, four hundred forty thousand, five hundred forty-two".