242554 has 16 divisors (see below), whose sum is σ = 413280. Its totient is φ = 105840.

The previous prime is 242551. The next prime is 242591. The reversal of 242554 is 455242.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (242551) 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, 249 + ... + 739.

It is an arithmetic number, because the mean of its divisors is an integer number (25830).

2²⁴²⁵⁵⁴ is an apocalyptic number.

242554 is a deficient number, since it is larger than the sum of its proper divisors (170726).

242554 is a wasteful number, since it uses less digits than its factorization.

242554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525.

The product of its digits is 1600, while the sum is 22.

The square root of 242554 is about 492.4977157307. The cubic root of 242554 is about 62.3643136406.

Adding to 242554 its reverse (455242), we get a palindrome (697796).

It can be divided in two parts, 24255 and 4, that multiplied together give a triangular number (97020 = T₄₄₀).

The spelling of 242554 in words is "two hundred forty-two thousand, five hundred fifty-four".