144400242 has 32 divisors (see below), whose sum is σ = 330422400. Its totient is φ = 41211648.

The previous prime is 144400241. The next prime is 144400253. The reversal of 144400242 is 242004441.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (144400241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61384 + ... + 63692.

It is an arithmetic number, because the mean of its divisors is an integer number (10325700).

Almost surely, 2^144400242 is an apocalyptic number.

144400242 is an abundant number, since it is smaller than the sum of its proper divisors (186022158).

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

144400242 is a wasteful number, since it uses less digits than its factorization.

144400242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 144400242 is about 12016.6651779934. The cubic root of 144400242 is about 524.6334457192.

Adding to 144400242 its reverse (242004441), we get a palindrome (386404683).

The spelling of 144400242 in words is "one hundred forty-four million, four hundred thousand, two hundred forty-two".