55740242 has 8 divisors (see below), whose sum is σ = 84078000. Its totient is φ = 27714244.

The previous prime is 55740239. The next prime is 55740253. The reversal of 55740242 is 24204755.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77492 + ... + 78207.

It is an arithmetic number, because the mean of its divisors is an integer number (10509750).

Almost surely, 2^55740242 is an apocalyptic number.

55740242 is a deficient number, since it is larger than the sum of its proper divisors (28337758).

55740242 is a wasteful number, since it uses less digits than its factorization.

55740242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155880.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 55740242 is about 7465.9387889267. The cubic root of 55740242 is about 381.9937729128.

Adding to 55740242 its reverse (24204755), we get a palindrome (79944997).

The spelling of 55740242 in words is "fifty-five million, seven hundred forty thousand, two hundred forty-two".